Solve the problem.S(x) = -x3 + 6x2 + 288x + 4000, 4 ? x ? 20 is an approximation of 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. 20°C
B. 12°C
C. 4°C
D. 8°C
Answer: B
Mathematics
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Solve.A carpenter bought miscellaneous hardware that totalled $37.65. After paying sales tax, his total cost was $39.72. What was the sales tax percentage?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Evaluate the expression for the given values of the variables.
for x = 3, and y = 12
A. 5 B. 21 C. 16 D. 8
Mathematics
Simplify.-(-(-11))
A. 12 B. -12 C. -11 D. 11
Mathematics
Solve the equation graphically over the interval [0, 2?). Express solutions to the nearest hundredth.-cot x - csc x = 4
A. {0.80} B. {0.49, 3.14} C. {5.79} D. {1.25, 4.51}
Mathematics