Simplify where possible. Then solve the equation.9 - 5 = 2r
A. r = 
B. r = 0
C. r = 2
D. r = 
Answer: C
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Solve the problem.Refer to the following preference schedule. 
Find the winner of a sequential runoff.
A. D B. B C. A D. C
Solve the application problem.Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 13 miles with the wind, and in the same amount of time runs 6 miles against the wind. What is the rate of the wind? (Round your answer to the nearest tenth, if necessary.)
A. 3.5 mph B. 13.6 mph C. 5 mph D. 1.8 mph
Multiply.(1)(-5)(-7)(-3)(3)
A. 105 B. -105 C. 315 D. -315
Solve the problem.The bar graph shows the number of fatal vehicle crashes per 100 million miles driven for drivers of various age groups. 
The number of fatal vehicle crashes per 100 million miles, N, for drivers of age x can be modeled by the formula N = 0.012x2 - 1.18x + 31.25.Using the formula, what age group(s) are expected to be involved in 9 fatal crashes per 100 million miles driven? Use a calculator and round to the nearest year. How well does the formula model the trend in the actual data shown in the bar graph?
A. 25 year-olds and 73 year-olds; The formula does not accurately model the data for ages expected to be involved in 9 fatal crashes per 100 million miles driven. B. 57 year-olds; The formula models the trend in the data reasonably well. C. 13 year-olds and 85 year-olds; The formula models the trend in the data reasonably well. D. 41 year-olds; The formula does not accurately model the data for ages expected to be involved in 9 fatal crashes per 100 million miles driven.