Evaluate the expression.
A. -7
B. 13
C. -3
D. 7
E. 29
Answer: B
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Solve the problem. Round to tenths where necessary.S(x) = -x3 + 3x2 + 189x + 1200, 2 ? x ? 9 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. 9°C B. 2°C C. 3°C D. 8°C
Integrate the function.
A. 32x - 
+ C
B. 
x + 
+ C
C. 
+ 
+ C
D. 32 sin-1 
+ 
+ C
Write fraction as decimal number. Use bar notation for repeating decimals.
A. 0.27
B. 0.
C. 0.2
D. 0.
Find all complex roots. Write the answer in polar form, with 0 ? ? ? 360°.Cube roots of -8
A. 2(cos 60° + i sin 60°), 2(cos 0° + i sin 0°) B. 2(cos 30° + i sin 30°), 2(cos 150° + i sin 150°), 2(cos 270° + i sin 270°) C. 2(cos 120° + i sin 120°), 2(cos 180° + i sin 180°), 2(cos 300° + i sin 300°) D. 2(cos 60° + i sin 60°), 2(cos 180° + i sin 180°), 2(cos 300° + i sin 300°)