Solve.David drives for 
hour to get his friend Tom's house. He then drives 
hour to get to the bowling alley. How many hours does David spend driving?
A. 
hour
B. 
hour
C. 
hour
D. 
hour
Answer: D
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Solve the problem.An election is held for president of the United States. Three candidates are running: a Democrat, a Republican, and an Independent. A certain voter prefers the Independent candidate over the other two, but realizing (because of all the pre-election polls) the race is going to be a close race between the Democrat and the Republican and that the Independent doesn't have a chance, he votes instead for his second choice (his preference between the Democrat and the Republican). This is an example of
A. the monotonicity criterion. B. insincere voting. C. the majority criterion. D. the independence of irrelevant alternatives criterion. E. none of these
Rationalize the denominator. Assume that all variables represent positive real numbers and that the denominator is not zero.
A. 
B. 
C. 
D. 
Write the solution set to the inequality in interval notation.x > 22
A. (22, ?) B. (-?, 22) C. [22, ?) D. (-?, 22]
Use a calculator to approximate, as precisely as possible, the solutions as rational numbers.x2 + 6x - 40 = 0
A. 4.00000000, -10.00000000 B. 22.84943324, -16.84943324 C. 10.00000000, -4.00000000 D. 16.84943324, -22.84943324