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OG12 OG15 OG16	In the last decade there has been a significant decrease in coffee consumption. During this same time, there has been increasing publicity about the adverse long-term effects on health of the caffeine in coffee. Therefore, the decrease in coffee consumption must have been caused by consumers` awareness of the harmful effects of caffeine.Which of the following, if true, most seriously calls into question the explanation above?
OG12 OG15 OG16 OG17 OG18	If n is an integer, which of the following must be even?
OG12 OG15 OG16 OG17 GWD PREP08 Test 2 OG18	To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
OG12 OG15	If 4 is one solution of the equation $${x}^{2} + 3x + k = 10$$, where k is a constant, what is the other solution?
OG12 OG15 OG16 OG17 PREP07 Test 1 OG18	According to the passage, each of the following is a difference between women`s oral narratives and most standard histories EXCEPT:
OG12	What is the value of the two-digit integer x ?(1)The sum of the two digits is 3.(2)x is divisible by 3.
OG12 PREP08 Test 2	Which of the following most logically completes the reasoning?When species are extensively hunted, individuals that reach reproductive maturity early make up a larger proportion of the population, because they have a better chance of reproducing. When species face diminished food resources, on the other hand, individuals tend to take longer to reach reproductive maturity. These considerations may help settle whether the primary cause of the gradual disappearance of North America's mastodons, prehistoric animals related to elephants, was diminished food resources or human hunting, since __________.
OG12	Scientists have recently discovered what could be the largest and oldest living organism on Earth, a giant fungus that is an interwoven filigree of mushrooms and rootlike tentacles spawned by a single fertilized spore some 10,000 years ago and extending for more than 30 acres in the soil of a Michigan forest.
OG12	The figure above shows the circular cross section of a concrete water pipe. If the inside radius of the pipe is r feet and the outside radius of the pipe is t feet, what is the value of r ?(1)The ratio of t - r to r is 0.15 and t - r is equal to 0.3 foot.(2)The area of the concrete in the cross section is 1.29π square feet.
OG12	The author of the passage is primarily concerned with doing which of the following?
OG12	if \|a c b d\|= ad-bc for all numbers a, b, c, and d, then \|3 -2 5 4\|
OG12 OG15 OG16 OG17 GWD PREP08 Test 2	Crowding on Mooreville's subway frequently leads to delays, because it is difficult for passengers to exit from the trains. Subway ridership is projected to increase by 20 percent over the next 10 years. The Mooreville Transit Authority plans to increase the number of daily train trips by only 5 percent over the same period. Officials predict that this increase is suffi cient to ensure that the incidence of delays due to crowding does not increase.Which of the following, if true, provides the strongest grounds for the officials' prediction?
OG12 OG15 OG16 OG17 PREP08 Test 1 OG18	Laos has a land area about the same as Great Britain but only four million in population, where many are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north.
OG12	The "dilemma" mentioned in highlight text can best be characterized as being caused by the necessity to make a choice when faced with a
OG12 OG15 OG16 OG17	What is the tenths digit in the decimal representation of a certain number?(1)The number is less than $$\frac1 3$$(2)The number is greater than $$\frac1 4$$
OG12 OG15 OG16 OG17 OG18	The sum $$\frac{7}{8}+\frac{1}{9}$$ is between
OG12 OG15 OG16	Installing scrubbers in smokestacks and switching to cleaner-burning fuel are the two methods available to Northern Power for reducing harmful emissions from its plants. Scrubbers will reduce harmful emissions more than cleaner-burning fuels will. Therefore, by installing scrubbers, Northern Power will be doing the most that can be done to reduce harmful emissions from its plants.Which of the following is an assumption on which the argument depends?
OG12 OG15	The plot of The Bostonians centers on the rivalry between Olive Chancellor, an active feminist, with her charming and cynical cousin, Basil Ransom, when they find themselves drawn to the same radiant young woman whose talent for public speaking has won her an ardent following.
OG12 OG15 OG16 OG17	Robots X, Y, and Z each assemble components at their respective constant rates. If $${r}_{x}$$ is the ratio of Robot X's constant rate to Robot Z's constant rate and $${r}_{y}$$ is the ratio of Robot Y's constant rate to Robot Z's constant rate, is Robot Z's constant rate the greatest of the three?(1)$${r}_{x}<{r}_{y}$$(2)$${r}_{y}< 1$$
OG12 OG15	If x = 1 - 3t and y = 2t - 1, then for what value of t does x = y?