Solve the problem.S(x) = -x3 - 9x2 + 165x + 1300, 5 ? 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. 5°C
B. 19°C
C. 6°C
D. 20°C
Answer: A
Mathematics
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Find the area.
A. 968 in.2 B. 550 in.2 C. 1100 in.2 D. 2200 in.2
Mathematics
Simplify.3 ? [32 + 3 ? (8 + 7)]
A. 120 B. 54 C. 540 D. 162
Mathematics
Solve the given equation.
m = 18
A. m = 0
B. m = 
C. m = 3
D. m = 
Mathematics
Solve the problem.A life insurance company uses the following rate table for annual premiums for women for term life insurance. Use a graphing utility to fit an exponential function to the data. Predict the annual premium for a woman aged 70 years.
A. y = -9306.4 + 2516.3 ln (x), $1723 B. y = 0.0000398x4.06, $1233 C. y = 6.367e0.068x, $743 D. y = 8.94e0.068x, $1044
Mathematics