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. 12°C
B. 4°C
C. 20°C
D. 8°C
Answer: A
Mathematics
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Establish the identity.
+ 
= 2 csc x
What will be an ideal response?
Mathematics
Solve the inequality using the x-intercept method or the intersection-of-graphs method. Express the solution set in interval notation.10a + 6 ? 9a + 17
A. (-?, 11] B. (10, ?) C. (-?, 10) D. [11, ?)
Mathematics
Factor.12x2 - 42x - 24
A. (12x - 6)(x + 4) B. (2x - 1)(6x + 24) C. 6(2x - 1)(x + 4) D. 6(2x + 1)(x - 4)
Mathematics
Solve the equation.
x - 4 = 1
A. {6} B. {-10} C. {10} D. {-6}
Mathematics