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. Round to the nearest tenth, if necessary.
A. 20°C
B. 8°C
C. 12°C
D. 4°C
Answer: C
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Solve the problem.Suppose you pay $2.00 to roll a fair die with the understanding that you will get back $6.00 for rolling a 1 or a 5, nothing otherwise. What are your expected winnings?
A. $0.00 B. -$2.00 C. $2.00 D. $6.00
Two sides and an angle are given. Determine whether the given information results in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results.B = 88°, b = 5, a = 25
A. one triangle A = 44°, C = 48°, c = 30 B. one triangle A = 45°, C = 48°, c = 34 C. one triangle A = 43°, C = 48°, c = 32 D. no triangle
Use the graph to evaluate the expression.Find (f ? f)(4) and (g ? g)(-1).
A. (f ? f)(4) = 4; (g ? g)(-1) = -1 B. (f ? f)(4) = 2; (g ? g)(-1) = -1 C. (f ? f)(4) = -2; (g ? g)(-1) = 1 D. (f ? f)(4) = 8; (g ? g)(-1) = 1
Find the sum of the first five terms of the geometric sequence.a = -16, r = -4
A. -3280 B. 816 C. 240 D. -10,280