Convert the rectangular coordinates of the point to polar coordinates (r, ?) with r > 0 and 0 ? ? < 2?.(0, -4)
A. (4, 0)
B. (4, ?)
C. 
D. 
Answer: C
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Evaluate the integral.
A. 
B. 
C. 
D. 
Factor completely.81x2 + 90xy + 25y2
A. (9x + 5y)2 B. (9x - 5y)2 C. (81x + 1)(x + 25) D. (9x + 5y)(9x - 5y)
Refer to the weighted voting system 
and the Shapley-Shubik definition of power. (The three players are P1, P2, and P3.)Which player in the sequential coalition 
is pivotal?
A. P2 B. P1 C. P3 D. All three players E. none of these
Solve the problem.Assume that the sales of a computer retail store are approximated by a linear function. Sales were 
in 
and 
in 
. Let 
represent 
alt="" style="vertical-align: -4.0px;" />. Find the equation giving yearly sales. Estimate sales in 
.
A. y = 404,000x + 890,000
y = 4,122,000 in 1989
B. y = 505,000x + 890,000
y = 4,930,000 in 1989
C. y = 505,000x + 890,000
y = 4,425,000 in 1989
D. y = 336,667x + 890,000
y = 3,920,001 in 1989