Solve the problem.A circular swimming pool, 20 feet in diameter, is enclosed by a circular deck that is 6 feet wide. What is the area of the deck? Use ? = 3.1416.
A. 1206.4 ft2
B. 772.8 ft2
C. 490.1 ft2
D. 314.2 ft2
Answer: C
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What is the minimum value of 
? Restrict your attention to the horizontal span of 0 to 1. Round your answer to two decimal places.
?
A. 0.13 B. 1.48 C. 2.06 D. 5.46
Choose the correct response.Suppose that x ounces of a 25% acid solution are mixed with y ounces of a 35% solution to obtain 85 ounces of a 32% solution. One equation in a system for solving this problem is 
Which of the following is the other equation?
A. .35x + .25y = .32(85) B. .25x + .35y = .32(85) C. 35x + 25y = 32 D. 25x + 35y = .32(85)
Solve the problem.For the function f(x) = 
, find all values x for which f(x) = 4.
A. 7 B. 19 C. 13 D. 49
Find an for the given geometric sequence.a1 = 4, r = 3
A. an = 3(4)n B. an = 3(4)n-1 C. an = 4(3)n-1 D. an = 4(3)n