When a certain bacteria are placed in a Petri dish it begins to double every 10 minutes. If the total amount of bacteria placed in the dish is 20, what will be the total after one hour?

A cop clocks a motorcyclist speeding down the highway at 90 mph. 2 minutes later the cop tears off after him averaging a speed of 120mph. At this rate how long will it take for our friendly copper to catch the speeder?

There are these 8 numbers in a set 9.4,9.9,9.9,9.9,10.0,10.2,10.2,10.5 The mean and standard deviation of the 8 numbers are 10.0 and 0.3 respectively, what percent of the 8 numbers are within one standard deviation of the mean?

Is |x-y| > |x| – |y|?

(1) y<x
(2) xy<0

Exactly 3/7 of the people in the room are under the age of 21, and exactly 5/13 of the people in the room are over the age of 65. If the total number of people in the room is greater than 50 and less than 100, how many people in the room are under the age of 21?

What is the value of k?

(1) In the xy-coordinate system, (a,b) and (a+3, b+k) are two points that lie on the line defined by the equation x = 3y – 7
(2) k² = 1

Is 22 a factor of x?

(1) 22 is a factor of 15x
(2) 22 is a factor of 16x

A merchant marks his goods in such a way that his profit on sale of 50 items equals the selling price of 10 items. What percent profit does he make?

f s – 1/s < 1/t – t.
Is s > t ?

(1) s > 1
(2) t > 0

Working alone Thomas can do a job in 8 hours longer than if both Thomas and Kevin worked together. If Kevin worked alone, he would take 4.5 hours more to complete the job than when he works with Thomas. Which of the following could be the amount of hours if they work together?

Two intersecting lines form four angles. Are the lines perpendicular?

(1) Each of the angles is equal to only one of the other three angles.
(2) The sum of three angles does NOT equal to 270 degrees.

Is the odd integer x a prime number?

(1) x + 2 is a prime number
(2) x – 3 is a prime number

A room contains 160 people, 15% of whom are women. A group of people, 30% of whom are women, leaves the room. Of the people remaining in the room, 10% are women. How many people left the room?

Roger sells twice as many $20 tickets as Thomas, and Thomas sells three times as many $10 tickets as Roger does. If there are only $10 and $20 tickets, how many tickets does Roger sell?

(1) Thomas sold a total of 35 tickets.
(2) Together Roger and Thomas sold 70 tickets for a total of $1,000

Sentence Correction: The following questions present a sentence, part of which is colored. Below each sentence you will find five ways to phrase the colored portion. The first choice repeats the underlined portion, the other four choices are different. If the original seems best, choose it; if not, choose one of the revisions.

According to a survey of graduating medical students conducted by the Association of American Medical Colleges, minority graduates are nearly four times more likely than are other graduates in planning to practice in socioeconomically deprived areas.

According to Booker T. Whatley's recent analysis, planting the same crops as are planted on large farms will lead to economic disaster for the small farmer, who should plan a succession of high-value crops that will provide a year-round cash flow.

Which of the following best completes the passage below?
As long as savings deposits are insured by the government, depositors will have no incentive to evaluate the financial strength of a savings bank. Yield alone will influence their choice of bank. To attract deposits, banks will be forced to offer the highest possible interest rates. And since paying higher rates inevitably strains the financial strength of a bank, ______

Every painting hanging in the Hoular Gallery is by a French painter. No painting in the Hoular Gallery is by a Vorticist. Only Vorticists use acrylic monochromes in their works. If the information above is true, which of the following must also be true?

Read the following passage and answer the questions:

In 1896 a Georgia couple suing for damages in the accidental death of their two year old was told that since the child had made no real economic contribution to the family, there was no liability for damages. In contrast, less than a century later, in 1979, the parents of a three-year-old sued in New York for accidental-death damages and won an award of $750,000. The transformation in social values implicit in juxtaposing these two incidents is the subject of Viviana Zelizer's excellent book, Pricing the Priceless Child. During the nineteenth century, she argues, the concept of the "useful" child who contributed to the family economy gave way gradually to the present-day notion of the "useless" child who, though producing no income for, and indeed extremely costly to, its parents, is yet considered emotionally "priceless." Well established among segments of the middle and upper classes by the mid-1800's, this new view of childhood spread throughout society in the late-nineteenth and early-twentieth centuries as reformers introduced child-labor regulations and compulsory education laws predicated in part on the assumption that a child's emotional value made child labor taboo.

For Zelizer the origins of this transformation were many and complex. The gradual erosion of children's productive value in a maturing industrial economy, the decline in birth and death rates, especially in child mortality, and the development of the companionate family (a family in which members were united by explicit bonds of love rather than duty) were all factors critical in changing the assessment of children's worth. Yet "expulsion of children from the 'cash nexus,' although clearly shaped by profound changes in the economic, occupational, and family structures," Zelizer maintains, "was also part of a cultural process 'of sacrelization' of children's lives." Protecting children from the crass business world became enormously important for late-nineteenth-century middle-class Americans, she suggests; this sacralization was a way of resisting what they perceived as the relentless corruption of human values by the marketplace.

In stressing the cultural determinants of a child's worth, Zelizer takes issue with practitioners of the new "sociological economics," who have analyzed such traditionally sociological topics as crime, marriage, education, and health solely in terms of their economic determinants. Allowing only a small role for cultural forces in the form of individual "preferences," these sociologists tend to view all human behaviors as directed primarily by the principle of maximizing economic gain. Zelizer is highly critical of this approach, and emphasizes instead the opposite phenomenon: the power of social values to transform price. As children became more valuable in emotional terms, she argues, their "exchange" or "surrender" value on the market, that is, the conversion of their intangible worth into cash terms, became much greater.

It can be inferred from the passage that accidental-death damage awards in America during the nineteenth century tended to be based principally on the…

It can be inferred from the passage that in the early 1800's children were generally regarded by their families as individuals who

Which of the following alternative explanations of the change in the cash value of children would be most likely to be put forward by sociological economists as they are described in the passage?

The primary purpose of the passage is to…

It can be inferred from the passage that which of the following statements was true of American families over the course of the nineteenth century?

Sentence Correction: The following questions present a sentence, part of which is colored. Below each sentence you will find five ways to phrase the colored portion. The first choice repeats the underlined portion, the other four choices are different. If the original seems best, choose it; if not, choose one of the revisions.

According to a recent study by Rutgers University, the number of women in state legislatures has grown in every election since 1968.

According to a recent study, the elderly in the United States are four times more likely to give regular financial aid to their children as to receive it from them.

We commonly speak of aesthetic judgments as subjective, and in the short term they are, since critics often disagree about the value of a particular contemporary work of art. But over time, the subjective element disappears. When works of art have continued to delight audiences for centuries, as have the paintings of Michelangelo, the music of Bach, and the plays of Shakespeare, we can objectively call them great.

The statements above best support which of the following conclusions?

Prior to 1975, union efforts to organize public-sector clerical workers, most of whom are women, were somewhat limited. The factors favoring unionization drives seem to have been either the presence of large numbers of workers, as in New York City, to make it worth the effort, or the concentration of small numbers in one or two locations, such as a hospital, to make it relatively easy. Receptivity to unionization on the workers' part was also a consideration, but when there were large numbers involved or the clerical workers were the only unorganized group in a jurisdiction, the multi-occupational unions would often try to organize them regardless of the workers' initial receptivity. The strategic reasoning was based, first, on the concern that politicians and administrators might play off unionized against non-unionized workers, and, second, on the conviction that a fully unionized public work force meant power, both at the bargaining table and in the legislature. In localities where clerical workers were few in number, were scattered in several workplaces, and expressed no interest in being organized, unions more often than not ignored them in the pre-1975 period.

But since the mid-1970's, a different strategy has emerged. In 1977, 34 percent of government clerical workers were represented by a labor organization, compared with 46 percent of government professionals, 44 percent of government blue-collar workers, and 41 percent of government service workers. Since then, however, the biggest increases in public-sector unionization have been among clerical workers. Between 1977 and 1980, the number of unionized government workers in blue-collar and service occupations increased only about 1.5 percent, while in the white-collar occupations the increase was 20 percent and among clerical workers in particular, the increase was 22 percent.

What accounts for this upsurge in unionization among clerical workers? First, more women have entered the work force in the past few years, and more of them plan to remain working until retirement age. Consequently, they are probably more concerned than their predecessors were about job security and economic benefits. Also, the women's movement has succeeded in legitimizing the economic and political activism of women on their own behalf, thereby producing a more positive attitude toward unions. The absence of any comparable increase in unionization among private-sector clerical workers, however, identifies the primary catalyst-the structural change in the multi-occupational public-sector unions themselves. Over the past twenty years, the occupational distribution in these unions has been steadily shifting from predominantly blue-collar to predominantly white-collar. Because there are far more women in white-collar jobs, an increase in the proportion of female members has accompanied the occupational shift and has altered union policy-making in favor of organizing women and addressing women's issues.

According to the passage, the public-sector workers who were most likely to belong to unions in 1977 were…

The author cites union efforts to achieve a fully unionized work force in order to account for why…

The author's claim that, since the mid-1970's, a new strategy has emerged in the unionization of public-sector clerical workers would be strengthened if the author…

According to the passage, in the period prior to 1975, each of the following considerations helped determine whether a union would attempt to organize a certain group of clerical workers EXCEPT…