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. 8°C
D. 20°C
Answer: A
Mathematics
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Find the greatest common divisor of the number by the method of intersection of sets of divisors.44 and 135
A. 6 B. 55 C. 22 D. 1
Mathematics
Write the best-fit linear model for the data.Two different tests are designed to measure employee productivity and dexterity. Several employees are randomly selected and tested with these results. Find the linear function to model this data. 
A. y = 10.7 + 1.53x B. y = 75.3 - 0.329x C. y = 2.36 + 2.03x D. y = 5.05 + 1.91x
Mathematics
Determine if the function is even, odd, or neither.f(x) = -8x5 + 4x3
A. Neither B. Odd C. Even
Mathematics
Use the change of base formula to approximate the logarithm to four decimal places.log5 0.847
A. -0.1032 B. 5.9032 C. -9.6922 D. -0.0721
Mathematics