Provide an appropriate response.
A swimming pool, 24 meters long, is designed to have a water depth of 0.9 meters at one end and 3 meters at the deep end. Find the angle of depression of the pool from the shallow end to the deep end. 
A. 85°
B. 29°
C. 5°
D. 2°
Answer: C
Mathematics
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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. 8°C B. 4°C C. 20°C D. 12°C
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A. - 
B. 
C. 3
D. - 3
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A. 
B. 3
C. 
D. 
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