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题目： In a group of 80 college students, how many own a car?(1) Of the students who do not own a car, 14 are male. (2) Of the students who own a car, 42% are female.

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题目： In the xy-coordinate system, do any points on line k lie in quadrant III?(1) Line k has y-intercept 2(2) Line k has slope $$\frac {2}{3} $$

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题目： A researcher computed the mean, the median, and the standard deviation for a set of performance scores. If 5 were to be added to each score, which of these three statistics would change?

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题目： If (y+3)(y-1) - (y-2)(y-1) = r(y-1), what is the value of y?(1) $${r}^{2}={25}$$(2) r = 5

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题目： A certain company retirement plan has a "rule of 70" provision that allows an employee to retire when the employee's age plus years of employment with the company total at least 70. In what year could a female employee hired In 1986 on her 32nd birthday first be eligible to retire under this provision?

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题目： A farmer produced 750 bushels of a certain crop at a cost of $20 per bushel. If the farmer sold $$\frac{2}{3}$$ of the bushels for double their production cost and sold the remaining bushels at 25 percent above their production cost, what was the farmer's gross profit on the sale of the crop?

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The passage suggests that in the study mentioned in highlight text the method for gathering information about security of land tenure reflects which of the following pairs of assumptions about Tawahka society?

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题目：

It can be inferred from the passage that both Tulving and Clayton would agree with which of the following statements?

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题目：

According to the passage, part of the evidence that scrub jays can bind information is that they

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题目： In the 1820's, anthracite coalfields opened in eastern Pennsylvania, and when canals and eventually railroads reached into the region, there were substantial supplies of coal that was exported to the nation's growing mills, forges, factories, and railways.

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题目： According to entomologists, single locusts are quiet creatures, but when locusts are placed with others of their species, they become excited, change color, vibrate, and even hum.

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题目： Unlike the body's inflammatory response to cuts and sprains, with widespread swelling and stiffness immobilizing the injured area until it heals, the body's response to sunburn is more localized and resulting in a distinct line dividing affected and unaffected areas of the skin.

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题目： The artist Renoir's last word was "flowers," spoken as they arranged a bouquet of roses just picked from his garden in a vase on his bedroom windowsill.

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题目： Citing the recent increase in earnings by several computer companies, economists feel that a cycle has begun in which personal computer users, especially corporate consumers, are replacing their PC's with more powerful models.

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题目： Scientists have recently discovered that the ultrathin, layered construction of a butterfly's wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away.