Solve the problem.S(x) = -x3 + 6x2 + 288x + 4000, 4 ? x ? 20 is an approximation to the number of salmon swimming upstream to spawn, where x represents the water temperature in degrees Celsius. Find the temperature that produces the maximum number of salmon.
A. 8°C
B. 20°C
C. 12°C
D. 4°C
Answer: C
Mathematics
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Find the volume of the solid generated by revolving the region about the given line.The region bounded above by the line 
, below by the curve 
, and on the right by the line 
, about the line 
A. 
?
B. 
?
C. 625?
D. 
?
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Graph the piecewise linear function.f(x) = 
A. 
B. 
C. 
D. 
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Evaluate the expression for the given replacement values. Write the answer in simplest form.x ÷ y for x = 
, y = 
A. 
B. 
C. 
D. 
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Express the verbal representation for the function f graphically.Divide the input x by 2 and then add 4 to obtain the output y.
A. 
B. 
C. 
D. 
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