The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).y2 = 16x
A. sin2 ? = 16r2 cos ?
B. r2 sin2 ? = 16 cos ?
C. r sin2 ? = 16 cos ?
D. sin2 ? = 16r cos ?
Answer: C
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Simplify, if possible.
A. -1
B. 
C. 1
D. -3x
Factor completely.x2 + 7x - 30
A. (x - 10)(x + 1) B. prime C. (x + 10)(x - 3) D. (x - 10)(x + 3)
Answer the question.The function f(x) = 60x computes the number of minutes in x hours. The function g(x) = 24x computes the number of hours in x days. What is (f ? g)(x) and what does it compute?
A. (f ? g)(x) = 1440x2; it computes the number of minutes in x days. B. (f ? g)(x) = 84x; it computes the number of minutes plus the number of days in x days. C. (f ? g)(x) = 1440x; it computes the number of minutes in x days. D. (f ? g)(x) = 1440x; it computes the number of days in x minutes.
Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.(5x3y3)4
-3
A. 
x36
B. 
x36
C. - 
x15
D. 
x15