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PREP07 Test 1	According to a review of 61 studies of patients suffering from severely debilitating depression, a large majority of the patients reported that missing a night's sleep immediately lifted their depression. Yet sleep-deprivation is not used to treat depression even though the conventional treatments, which use drugs and electric shocks, often have serious side effects.Which of the following, if true, best explains the fact that sleep-deprivation is not used as a treatment for depression?
PREP07 Test 1	In the figure above, if x and y are each less than 90 and PS∥QR is the length of segment PQ less than the length of segment SR ?(1) x > y(2) x + y > 90
PREP07 Test 1	On July 1 of last year, the total number of employees at Company E was decreased by 10 percent. Without any change in the salaries of the remaining employees, the average (arithmetic mean) employee salary was 10 percent more after the decrease in number of employees than before the decrease. The total of the combined salaries of all of the employees at Company E after July 1 last year was what percent of that before July 1 last year?
PREP07 Test 1	Paper production accounts for approximately 40 percent of the world's industrial use of wood, and the market for paper is growing faster than it is for all major wood products.
PREP07 Test 1	In many corporations, employees are being replaced by automated equipment in order to save money. However, many workers who lose their jobs to automation will need government assistance to survive, and the same corporations that are laying people off will eventually pay for that assistance through increased taxes and unemployment insurance payments.Which of the following, if true, most strengthens the author's argument?
PREP07 Test 1	A thin piece of wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and the square regions in terms of r?
PREP07 Test 1	A bookstore that sells used books sells each of its paperback books for a certain price and each of its hardcover books for a certain price. If Joe, Maria, and Paul bought books in this store, how much did Maria pay for 1 paperback book and 1 hardcover book?(1) Joe bought 2 paperback books and 3 hardcover books for $12.50.(2) Paul bought 4 paperback books and 6 hardcover books for $25.00.
PREP07 Test 1	Broccoli thrives in moderate to cool climates and propagated by seeds, either sown directly in the field or in plant beds designed for producing transplants.
PREP07 Test 1	United States hospitals have traditionally relied primarily on revenues from paying patients to offset losses from unreimbursed care.Almost all paying patients now rely on governmental or private health insurance to pay hospital bill. Recently, insurers have been strictly limiting what they pay hospitals for the care of insured patients to amounts at or below actual costs.Which of the following conclusions is best supported by the information above?
PREP07 Test 1	A certain company has 18 equally qualified applicants for 4 open positions. How many different groups of 4 applicants can be chosen by the company to fill the positions if the order of selection does not matter?
PREP07 Test 1	What is the average (arithmetic mean) of eleven consecutive integers?(1)The average of the first nine integers is 7.(2)The average of the last nine integers is 9.
PREP07 Test 1	Evolutionary psychology holds that the human mind is not a "blank slate," but instead that it comprises specialized mental mechanisms that were developed as a way of solving specific problems human ancestors faced millions of years ago.
PREP07 Test 1	If x and y are integers, what is the value of x + y ? (1) 690 < x < y < 696(2) 692 < x < y < 695
PREP07 Test 1	40, 45, 45, 50, 50, 60, 70, 75, 95, 100The scores on a certain history test are shown above. How many scores were greater than the median score but less than the mean score?
PREP07 Test 1	Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments.
PREP07 Test 1	Is x less than 20 ?(1)The sum of x and y is less than 20.(2)y is less than 20.
PREP07 Test 1	A certain law firm consists of 4 senior partners and 6 junior partners. How many different groups of 3 partners can be formed in which at least one member of the group is a senior partner? (Two groups are considered different if at least one group member is different.)
PREP07 Test 1	Beneath the soil of the Malheur National Forest in eastern Oregon, a fungus has for centuries been slowly weaving its way through the roots of trees, to become the largest living single organism known to humans.
PREP07 Test 1	Is the integer k divisible by 4 ? (1) 8k is divisible by 16. (2) 9k is divisible by 12.
PREP07 Test 1	Susan drove at an average speed of 30 miles per hour for the first 30 miles of a trip and then at an average speed of 60 miles per hour for the remaining 30 miles of the trip. If she made no stops during the trip, what was Susan's average speed, in miles per hour, for the entire trip?