Write the equation in polar form.x2 + y2 = 81
A. r = 9 cos ?
B. r = 81
C. r = 9 sin ?
D. r = 9
Answer: D
Mathematics
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You start with an investment of $1440.09. The first year the investment grows by 7%. The second year the investment declines by 7%. What is the value of the investment at the end of the two-year period? Round your answer to the nearest cent. ?
A. $1,440.09 B. $1,433.03 C. $0.00 D. None of the above
Mathematics
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Use rational exponents to simplify. Do not use fraction exponents in the final answer. Assume that even roots are of nonnegative quantities.
9
A. x3y3 B. x108y108 C. x36y36 D. x12y12
Mathematics
Evaluate the expression.
? 
+ 8
A. 
B. 
C. 
D. 
Mathematics