Use the fundamental identities to simplify the expression.sin ? cos ? sec ? csc ?
A. tan2?
B. csc2?
C. sec2?
D. 1
Answer: D
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Find the indicated probability.The following table show the results of a clinical trial for an allergy drug. 
What is the probability that a randomly selected person was given a placebo and improved? Round your answer to the nearest thousandth when necessary.
A. 0.69 B. 0.17 C. 0.942 D. 0.772
Find the inverse of the following one-to-one function.f(x) = 2x
A. f-1(x) = 2 + x
B. f-1(x) = 2x
C. f-1(x) = 
D. f-1(x) = 
Solve the problem.A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 33 marbles in it. At least how many green marbles does it have?
A. At least 17 green marbles B. At least 11 green marbles C. At least 12 green marbles D. At least 22 green marbles
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Five cards are drawn from a deck. The number of tens is counted.
A. 
B. 
C. 
D. 