Use the rules of exponents to simplify the expression. Use positive exponents to write the answer.
A. x17
B. x63
C. 
D. x9
Answer: D
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Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest cent.A local dealer sells baseballs for $25 each. If $6.90 is the cost, what is the percent of markup on the cost?
A. 27.6% B. 2.6% C. 72.4% D. 262.3%
Solve.David recently switched to a long distance phone company which charges a monthly fee of $5.45 plus $0.06 per minute. A linear function that expresses the monthly bill B as a function of minutes used m is 
What are the independent and dependent variables?
A. The independent variable is the customer, and the dependent variable is B. B. The independent variable is B, and the dependent variable is m. C. The independent variable is 5.45, and the dependent variable is 0.06. D. The independent variable is m, and the dependent variable is B.
Approximate the zero of f(x) = cos(x) + 3x in [–1, 1] to within 0.00001.
What will be an ideal response?
The following pictograph shows the number of bicyclists who participated in the Labor Day weekend bicycle race for the years 2003-2009. Use the graph to answer the question. 
Approximate the total number of cyclists who participated in 2005 and 2006.
A. 140 cyclists B. 160 cyclists C. 150 cyclists D. 130 cyclists