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. $8800
B. $3960
C. $818
D. $7200
Answer: D
Mathematics
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Factor completely. If the polynomial is prime, state so.81k3m - 375m4
A. (9km - 15m2)(9k2 + 25m2) B. 3m(27k - 5m)(k2 + 15km + 25m2) C. 3m(3k + 5m2)(9k2 - 15km + 25km2) D. 3m(3k - 5m)(9k2 + 15km + 25m2)
Mathematics
Use radical notation to write the expression. Simplify if possible.(16 x10) -1/2
A. 
B. - 4x5
C. 
D. 
Mathematics
Use DeMoivre's Theorem to find the indicated power. Write the answer in rectangular form.(2 - 2i)5
A. -128 + 128i
B. -64
+ 64
i
C. -64 + 64i
D. - 
+ 
i
Mathematics
Solve the equation. Use natural logarithms. When appropriate, give solutions to three decimal places unless otherwise indicated.ln ex = 4
A. {4} B. {1.386} C. {2.000} D. {1.472}
Mathematics