Use any method to evaluate the integral.
dx
A. csc x + C
B. -sec x + C
C. sec x + C
D. -csc x + C
Answer: D
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Use a calculator to approximate the area of the surface generated when the given curve is revolved about the x-axis. Round to two decimal places when necessary.y = sinx on 
A. 13.39 B. 7.65 C. 5.1 D. 1.15
Solve the problem.Murrel's formula for calculating the total amount of rest, in minutes, required after performing a particular type of work activity for 30 minutes is given by the formula R(w) = 
, where w is the work expended in kilocalories per min. A bicyclist expends 6 kcal/min as she cycles home from work. Find R'(w) for the cyclist; that is, find R'(6).
A. 2.96 min2/kcal B. 3.7 min2/kcal C. 4.44 min2/kcal D. 13.33 min2/kcal
Find percent notation for the fraction notation in the sentence.In one company, one out of every ten employees use all their sick time. What percent use all their sick time?
A. 9% B. 1% C. 90% D. 10%
Solve the equation.t - 1 = 16
A. t = -15 B. t = 17 C. t =15 D. t = -17