Solve the problem.Suppose a cost-benefit model is given by 
where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 45% to the nearest dollar.
A. $3465
B. $7700
C. $818
D. $6300
Answer: D
Mathematics
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Find the amount by which the ordinary interest is larger than the exact interest. Round to the nearest cent.$51,100 at 11% for 220 days
A. $3435.06 B. $47.06 C. $57.56 D. $37.56
Mathematics
Find the domain of f.f(x) = 
A. {x | x ? 9} B. {x | x ? 5} C. {x | x ? -5} D. {x | x ? 0, x ? -5}
Mathematics
Express using positive exponents. Then, if possible, simplify.
-2
A. - 
B. 
C. 
D. 9x2
Mathematics
Write the statement as an equation.Twice the number of hockey goals scored (S) is the total number of goals attempted (A).
A. A = 2S B. A = S ÷ 2 C. 2A = S D. S ? A = 2
Mathematics