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PREP07 Test 2
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The more frequently employees take time to exercise during working hours each week, the fewer sick days they take. Even employees who exercise only once a week during working hours take less sick time than those who do not exercise. Therefore, if companies started fitness programs, the absentee rate in those companies would decrease significantly.Which of the following, if true, most seriously weakens the argument above?
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PREP07 Test 2
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In a certain furniture store, each week Nancy earns a salary of $240 plus 5 percent of the amount of her total sales that exceeds $800 for the week. If Nancy earned a total of $450 one week, what were her total sales that week?
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PREP07 Test 2
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If y≥0, what is the value of x ?(1) |x - 3| ≥ y(2) |x - 3| ≤ -y
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PREP07 Test 2
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A survey of 765 working women over eighteen years of age found that 60 percent of them worked 40 or more hours a week and for married women with children under eighteen it was more likely that they would work different shifts from their husbands.
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PREP07 Test 2
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Recently a court ruled that current law allows companies to reject a job applicant if working in the job would entail a 90 percent chance that the applicant would suffer a heart attack. The presiding judge justified the ruling, saying that it protected both employees and employers.The use of this court ruling as part of the law could not be effective in regulating employment practices if which of the following were true?
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PREP07 Test 2
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If m is a positive odd integer, what is the average (arithmetic mean) of a certain set of m integers? (1) The integers in the set are consecutive multiples of 3. (2) The median of the set of integers is 33.
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PREP07 Test 2
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The sum of the first 50 positive even integers is 2,550. What is the sum of the even integers from 102 to 200, inclusive?
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PREP07 Test 2
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Compared to those who do not, running three days a week saves an average of 14.1 percent on health-care costs each year in the United States.
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PREP07 Test 2 PREP2012
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Guitar strings often go "dead"-become less responsive and bright in tone-after a few weeks of intense use. A researcher whose son is a classical guitarist hypothesized that dirt and oil, rather than changes in the material properties of the string, were responsible.Which of the following investigations is most likely to yield significant information that would help evaluate the researcher's hypothesis?
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PREP07 Test 2
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If a < y < z < b, is |y - a | < |y - b | ? (1) |z - a | < |z - b | (2) |y - a | < |z - b |
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PREP07 Test 2
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The majority of scientists believe that to reduce and stabilize atmospheric concentrations of carbon dioxide, emissions must be cut at the source by fossil fuels that are burned more efficiently and, in some cases, by alternatives such as hydrogen fuel cells that can replace fossil fuels altogether.
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PREP07 Test 2
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To protect certain fledgling industries, the government of country Z banned imports of the types of products those industries were starting to make. As a direct result, the cost of those products to the buyers, several export-dependent industries in Z, went up, sharply limiting the ability of those industries to compete effectively in their export markets.Which of the following can be most properly inferred from the passage about the products whose importation was banned?
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PREP07 Test 2
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$$R=\frac{24\frac{F}{N}}{P+\frac{A}{12}}$$ A certain bank uses the formula above to approximate the annual percentage rate R of a monthly installment loan. Which of the following is an equivalent form of the formula?
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PREP07 Test 2
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If ab ≠ 0 and points (-a, b) and (-b, a) are in the same quadrant of the xy-plane, is point (-x, y) in this same quadrant?(1) xy > 0(2) ax > 0
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PREP07 Test 2
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A salesperson received a commission of 3 percent of the sale price for each of the first 100 machines that she sold and 4 percent of the sale price for each machine that she sold after the first 100. If the sale price of each machine was $10,000 and the salesperson received a $36,000 commission, how many machines did she sell?
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PREP07 Test 2
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A group of paleontologists recently announced that a site in Utah has yielded fossils of some of the biggest armored dinosaurs ever found, and they are at least 25 million years older than those of any similar dinosaur type that previously was found in North America.
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PREP07 Test 2
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Treatment for hypertension forestalls certain medical expenses by preventing strokes and heart disease.Yet any money so saved amounts to only one-fourth of the expenditures required to treat the hypertensive population.Therefore, there is no economic justification for preventive treatment for hypertension.Which of the following, if true, is most damaging to the conclusion above?
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PREP07 Test 2
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If q is a positive integer less than 17 and r is the remainder when 17 is divided by q, what is the value of r?(1) q > 10(2) $${q}={2}^{k}$$, where k is a positive integer.
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PREP07 Test 2
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From a group of 21 astronauts that includes 12 people with previous experience in space flight, a 3-person crew is to be selected so that exactly 1 person in the crew has previous experience in space flight. How many different crews of this type are possible?
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PREP07 Test 1 PREP07 Test 2
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In addition to her work on the Miocene hominid fossil record, Mary Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting East African cave paintings.
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