Find the exact value of the expression, if possible. Do not use a calculator.cos (cos-1 0.3)
A. 3.4
B. 2.8
C. 0.3
D. 1
Answer: C
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Solve the problem.A rocket is 34 feet from a satellite when it begins accelerating away from the satellite at a constant rate of 20 feet per second per second. The distance, in feet, between the rocket and the satellite is modeled by 
where t is the number of seconds since the rocket started accelerating. Use the model to find and interpret the result when t = 9.
A. When t = 9, P = 844; After 9 seconds, the distance between the rocket and the satellite is 844 feet. B. When t = 115, P = 9; After 115 seconds, the distance between the rocket and the satellite is 9 feet. C. When t = 124, P = 9; After 124 seconds, the distance between the rocket and the satellite is 9 feet. D. When t = 9, P = 810; After 9 seconds, the distance between the rocket and the satellite is 810 feet.
Write an equation for the piecewise function.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Solve the problem.For what numbers x, 0 ? x ? 2?, does cos x = -1?
A. ?
B. 
C. 
, 
D. none
List the set in roster form.
?
?
A. 2, 3, 4, 5, 6, 7, 8, 9, 10 B. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 C. 2, 4, 6, 8, 10, 12, 14 D. 1, 3, 5, 7, 9, 11, 13 E. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,15