The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r(1 - 2 cos ?) = 1
A. x2 + y2 = (1 + 2x)2
B. x2 + y2 = 2 + x
C. x2 + y2 = 1 + 2x
D. x2 + y2 = (2 + x)2
Answer: A
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Find the absolute extreme values of each function on the interval.f(x) = sin 
, 0 ? x ? 
A. Maximum value of 1 at x = 0; minimum value of -1 at x = ?
B. Maximum value of 1 at x = 
?; minimum value of -1 at x = 
?,
C. Maximum value of 1 at x = 
?; minimum value of -1 at x = 
?,
D. Maximum value of 1 at x = 
?; minimum value of -1 at x = 
?
Solve the problem.Of 112 bicycles in a bike rack, 59 are mountain bikes. What fraction of the bicycles are not mountain bikes?
A. 
B. 
C. 
D. 
Using the pair of parametric equations, find the values of A and B in the table.x = -2t + 7, y = t - 1, for 0 ? t ? 7
A. A = -3, B = 3 B. A = 4, B = -3 C. A = 4, B = 4 D. A = 3, B = -3
Solve the equation.(y - 11) - (y + 4) = 6y
A. - 
B. - 
C. - 
D. - 