Use an identity to write the expression as a single trigonometric function or as a single number.2 cos24x - 1
A. cos 4x
B. 
sin 16x
C. 2 sin 4x
D. cos 8x
Answer: D
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Determine which labeled sections make up the indicated set.
C - (A ? B)
A. r, p B. s, v, p C. p, r, s D. r
Find the exact value for x in the interval 
that satisfies the equation. sin (x) = 
A. 
B. 
C. - 
D. - 
At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:At most 14.3 seconds
A. 16% B. 13.5% C. 50% D. 84%
Solve the problem.Let p be the percentage of people who are unsatisfied with their current job at t years after 1990. A reasonable model is p = 0.81t + 26.1. In which years will more than 50% of people be unsatisfied with their job?
A. after 2084 B. after 2020 C. after 2030 D. after 2052