Solve the problem.S(x) = -x3 - 3x2 + 72x + 900, x ? 2 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. 6°C
B. 8°C
C. 4°C
D. 2°C
Answer: C
Mathematics
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Provide an appropriate response.If the series 
is integrated term by term, for what value(s) of x does the new series converge?
A. 5 ? x < 7 B. 5 < x ? 7 C. 5 < x < 7 D. 5 ? x ? 7
Mathematics
You are given the principal, the annual interest rate, and the compounding period. Determine the value of the account at the end of the specified time period.$2100, 8%, monthly, 2 years
A. $13,316.48 B. $2449.44 C. $2463.06 D. $2128.09
Mathematics
Remove grouping symbols and simplify.3(-2x + 4) - 4(x - 1)
A. -18x + 16 B. -10x + 3 C. 10x D. -10x + 16
Mathematics
Find an equation for the parabola described.Vertex at (5, -1); focus at (4, -1)
A. (y + 1)2 = 4(x - 5) B. (x + 5)2 = -12(y - 1) C. (y + 1)2 = -4(x - 5) D. (x + 5)2 = 12(y - 1)
Mathematics