Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14
B. -5
C. 0
D. 1
Answer: D
Mathematics
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Replace the polar equation with an equivalent Cartesian equation.r2 + 2r2 sin ? cos ? = 225
A. x2 + 3y2 = 225 B. x2 + y2 = 225 C. x + y = 15 D. x + y = ±15
Mathematics
Find the value of each square root by use of a calculator. Each number is approximate.
+ 
A. 6.5863 B. 4.75060 C. 6.58630 D. 4.7506
Mathematics
Find the amplitude.y = -4 cos(3?x - 3)
A. 3? B. ? C. 4 D. -12
Mathematics
Solve the equation.-327.398x = -924.737
(Round to the nearest hundredth when necessary.)
A. x = 0.35 B. x = -597.34 C. x = 302,757.04 D. x = 2.82
Mathematics