Factor completely, if possible.x2 - x - 42
A. (x + 7)(x - 6)
B. (x + 6)(x - 7)
C. (x + 1)(x - 42)
D. Prime
Answer: B
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Use the graph to answer the question.This double-bar graph shows the number of male (M) and female (F) athletes at a university over a four-year period. 
Compare the trend in the number of male athletes during the four-year period and the trend in the number of female athletes during the four-year period .
A. The number of male athletes and the number of female athletes increased steadily over the four-year period. B. The number of male athletes increased steadily over the four-year period. The number of female athletes increased in 1987 then decreased again in 1988 and 1989. C. The number of female athletes increased steadily over the four-year period. The number of male athletes increased to a peak in 1988 and then decreased again in 1989. D. The number of male athletes increased steadily over the four-year period. The number of female athletes increased to a peak in 1988 and then decreased again in 1989.
Solve.In a statistics class, the following test scores were recorded for a student: 84, 79, 77, 73, 79, 65, 75. Find the mean, median, and mode for the data.
A. mean: 77, median: 73, mode: 79 B. mean: 76, median: 73, mode: 84 C. mean: 77, median: 76, mode: 84 D. mean: 76, median: 77, mode: 79
Find the sum, if it exists, of the terms of the infinite geometric sequence.a1 = 5, r = - 
A. 
B. 
C. 
D. Does not exist
Use a proportion to solve the application.To determine the number of fish in a lake, researchers caught and tagged 260 of them. In a later sample of 72 fish, the researchers found that 30 were tagged. Estimate the total number of fish in the lake.
A. 8 fish B. 561,600 fish C. 108 fish D. 624 fish