Solve the problem.S(x) = -x3 - 45x2 + 525x + 1429, 0 ? x ? 15 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. 0°C
B. 12.5°C
C. 10°C
D. 5°C
Answer: D
Mathematics
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Test the equation for symmetry with respect to the given axis, line, or pole.r = -2 cos ?; the polar axis
A. May or may not be symmetric with respect to the polar axis B. Symmetric with respect to the polar axis
Mathematics
For the given functions f and g, find the indicated value.f(x) = 
, g(x) = 3x(f ? g)(2)
A. 
B. 3
C. 
D. 3
Mathematics
Combine like terms.8m + 5n
A. 8m + 5n B. 8m - 5n C. 13mn D. -13mn
Mathematics
Find the length of the section represented by x in the figure. 
a = 27
b = 1
c = 14
A. 11
B. 11
C. 40
D. 13
Mathematics