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. 4°C
B. 20°C
C. 12°C
D. 8°C
Answer: C
Mathematics
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Find the area of the region specified by the integral(s).
A. 3 ln 3 B. 3(ln 3 - 1) C. ln 3 + 1 D. ln 3
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Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.x2 + 65x + 66
A. Prime B. (x + 66)(x - 1) C. (x + 11)(x - 6) D. (x - 11)(x + 6)
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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos(2?) = 
, 0 < ? < 
Find sin ?.
A. 
B. 
C. 
D. 
Mathematics
An expression that occurs in calculus is given. Factor completely.2(x + 4)(x - 3)3 + (x + 4)2 ? 4(x - 3)2
A. 2(x + 3)(x - 4)2(3x + 5) B. (x + 4)(x - 3)2(3x + 5) C. (x + 4)(x - 3)2(6x + 10) D. 2(x + 4)(x - 3)2(3x + 5)
Mathematics