Solve the problem.Find the side length of a square with the same perimeter as a circle with radius 8 in. Use 3.14 for 
A. 6.28 in.
B. 7.09 in.
C. 12.56 in.
D. 25.12 in.
Answer: C
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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
Write the fraction or mixed number as a percent.
A. 83
%
B. 
%
C. 
%
D. 8
%
The graph of an exponential function is given. Match the graph to one of the following functions.
A. f(x) = 5x B. f(x) = 5x + 2 C. f(x) = 5x - 2 D. f(x) = 5x - 2
Let P = 
, X = 
, and T = 
, where all the elements are real numbers. Use these matrices to determine whether the statement is true or false for 2 × 2 matrices.k(X + T) = kX + kT, for any real number k.
A. True B. False