Solve the formula for the specified variable.A = 
bh for h
A. h = 
B. h = 
C. h = 
D. h = 
Answer: A
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Solve and check. Use the square root principle to eliminate the square.(r + 4)2 = 10
A. 4 ± 
B. -4 ± 
C. ±
D. 6
The function f is one-to-one. Find its inverse.f(x) = 2x
A. f-1(x) = 
B. f-1(x) = -2x
C. f-1(x) = 
D. f-1(x) = 2x
Solve the problem.A surveyor standing 53 meters from the base of a building measures the angle to the top of the building and finds it to be 37°. The surveyor then measures the angle to the top of the radio tower on the building and finds that it is 47°. How tall is the radio tower?
A. 16.9 m B. 6.18 m C. 6.87 m D. 9.35 m
Solve the problem.The average daily temperature T of a city in the United States is approximated by T = 55 - 23 cos 
(t -30)where t is in days, 1 ? t ? 365, and t = 1 corresponds to January 1. Find the period of T.
Fill in the blank(s) with the appropriate word(s).