Find the axis of symmetry of the given function.f(x) = 9x - 2x2 + 1
A. x = 
B. x = 
C. x = - 
D. x = - 
Answer: B
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Solve the problem.A room in the shape of a triangle has sides of length 6 yd, 9 yd, and 13 yd. If carpeting costs $14.50 a square yard and padding costs $5.25 a square yard, how much to the nearest dollar will it cost to carpet the room, assuming that there is no waste?
A. $456 B. $450 C. $343 D. $467
Rewrite as a percent.4
A. 0.04% B. 200% C. 0.4% D. 400%
Determine the integral by making an appropriate substitution.
dx
A. 18(cos x)3/2 + C B. -8(cos x)3/2 + C C. -18(cos x)3/2 + C D. 8(cos x)3/2 + C
The purchasing power P (in dollars) of an annual amount of A dollars after t years of 4% inflation decays according to 
. How long will it be before a pension of $60,000 per year has a purchasing power of $30,000? Round your answer to one decimal place.
?
A. 1.0 year B. 9.7 years C. 15.8 years D. 35.7 years E. 17.3 years