Rationalize the denominator.
A. 
B. 
C. 
D. 1 + 
Answer: B
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Use a graphing calculator to determine which of the following expressions asserts an identity.2 
= ...
A. 2 cosx + 2 sin x B. 2 cos 2x C. 2 D. 2 cos x - 2 sin x
Establish the identity.csc3 x tan2 x = csc x (1 + tan2 x)
What will be an ideal response?
An amount P, invested at a simple interest rate r, will grow to an amount A in t years, according to the formula A = P ( 1 + r t ). Suppose a man invested some money at 5.9%. If after 5 years, he had $6,151.25 on deposit, what amount did he originally invest? Round your answer to the nearest integer.
A. P = $4,900 B. P = $4,950 C. P = $4,750 D. P = $4,650
From a pool of 12 candidates, the offices of president, vice-president, secretary, and treasurer will be filled. In how many different ways can the offices be filled? ?
A. 12,380 B. 13,380 C. 12,880 D. 13,880 E. 11,880