Find the exact value of the logarithmic expression.log9 81
A. 81
B. 9
C. 2
D. 18
Answer: C
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Solve the problem.If Emery has $1100 to invest at 6% per year compounded monthly, how long will it be before he has $2100? If the compounding is continuous, how long will it be? (Round your answers to three decimal places.)
A. 106.985 yr, 11.11 yr B. 0.133 yr, 1.078 yr C. 10.804 yr, 10.777 yr D. 0.925 yr, 0.898 yr
Multiply.(9y2 - 8)(9y2 + 8)
A. 81y4 - 144y2 + 144 B. 81y4 - 144y2 - 64 C. 81y2 + 64 D. 81y4 - 64
Graph the polar equation.r2 = 53 cos 4?
A. 
B. 
C. 
D. 
The graph of the function
?
?
is shown below. Determine the domain.
A. Domain: all real numbers except x = -2 and x = 2 B. Domain: all real numbers except x = 2 C. Domain: all real numbers except x = 0 D. Domain: all real numbers except x = 0 E. Domain: all real numbers except x = 4