Write an equation for the piecewise function.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Answer: B
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Write the equation of the circle that satisfies the following conditions. Express the final equation in the form x2 + y2 + Dx + Ey + F = 0.Center at the origin and r = 3
A. x2 + y2 = 0 B. x2 - y2 - 9 = 0 C. x2 - y2 + 9 = 0 D. x2 + y2 + 9 = 0 E. x2 + y2 - 9 = 0
Find the derivative.r = 17 - ?8 cos ?
A. 
= 8?7 cos ? - ?8 sin ?
B. 
= 8?7 sin ?
C. 
= - 8?7 cos ? + ?8 sin ?
D. 
= 8?7 sin ? - ?8 cos ?
Use an annual percentage rate table to solve the problem.A homeowner installed a new swimming pool for $7000. He paid 10% down and then paid 36 monthly payments of $197.42. Determine the APR of the loan to the nearest 
of a percent.
A. 9.0% B. 8.5% C. 8.0% D. 10.0%
Evaluate or simplify the exponential expression.-30
A. 1 B. -1 C. -3 D. 0