Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.
1/4
A. 
B. xy
C. xy2
D. xy1/2
Answer: C
Mathematics
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Solve the problem.Suppose the government wants to impose a tax on fossil fuels to reduce carbon emissions. The cost benefit is modeled by 
where x represents the dollars of tax per ton of carbon emitted and P represents the percent reduction in emissions of carbon. (P is in decimal form.) Determine P when 
Round to three decimal places.
A. -0.190 B. 1.806 C. -0.11 D. 0.194
Mathematics
Graph the inequality.y > -2x - 4
A. 
B. 
C. 
D. 
Mathematics
Find the unknown length in the right triangle. If necessary, approximate the length to the nearest thousandth.
A. 9.434 cm B. 7.681 cm C. 6.245 cm D. 13 cm
Mathematics
Multiply or divide as indicated.
÷ 
A. 
B. 
C. 
D. 
Mathematics