Solve the problem.Determine a polynomial that represents the area of the figure. Leave ? in the answer.
A. 36x2 + 36x + 9
B. 36x2 + 9
C. 36?x2 + 9?
D. 36?x2 + 36?x + 9?
Answer: D
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Find the area of the shaded region.
A. 
B. 
C. 
D. 
Solve the problem.The wind is blowing at 10 knots. Sailboat racers look for a sailing angle to the 10-knot wind that produces maximum sailing speed. This situation is now represented by the polar graph in the figure shown below. Each point (r, ?) on the graph gives the sailing speed, r, in knots, at an angle ? to the 10-knot wind. What is the speed to the nearest knot, of the sailboat sailing at 60° angle to the wind? 
A. 6 knots B. 4 knots C. 5 knots D. 7 knots
Factor completely. If the polynomial cannot be factored, write "prime."-x2 + 2x + 48
A. -(x - 8)(x - 6) B. (x + 8)(x - 6) C. -(x - 8)(x + 6) D. Prime
Decide whether or not the functions are inverses of each other.f(x) = 
, domain [-6, ?); g(x) = x2 + 6, domain (-?, ?)
A. No B. Yes