Simplify. Express your answer with positive exponents. Assume that all variables are nonzero.
A. 
B. 
C. 
D. 
Answer: C
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Solve.The amount of simple interest earned on an investment over a fixed amount of time is jointly proportional to the principle invested and the interest rate. A principle investment of $1900.00 with an interest rate of 3% earned $57.00 in simple interest. Find the amount of simple interest earned if the principle is $4700.00 and the interest rate is 2%.
A. $141.00 B. $9400.00 C. $94.00 D. $38.00
Solve the problem.A small farm field is a square measuring 240 feet on a side. What is the perimeter of the field?
A. 960 ft B. 1920 ft C. 480 ft D. 240 ft
Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to three decimal places. log80.319
A. -0.496 B. -0.549 C. -1.820 D. 25.078
Graph the sinusoidal function.y = 
cos (- 
x)
A. 
B. 
C. 
D. 