If possible, evaluate the expression at the given value of the variable.
, x = -9
A. - 
B. 
C. 0
D. Undefined
Answer: D
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Find the standard deviation s for the given data. Round your answer to one more decimal place than the original data.The normal monthly precipitation (in inches) for August is listed for 12 different U.S. cities.3.51.62.43.74.13.91.03.64.23.43.72.2Compute the standard deviation.
A. 1.09 B. 1.05 C. 12.03 D. 1.00
Solve the problem.If a ball is thrown upward at 64 feet per second from the top of a building that is 120 feet high, the height of the ball can be modeled by 
feet, where t is the number of seconds after the ball is thrown. After how many seconds does the ball reach its maximum height?
A. 3.8 sec B. 4 sec C. 1 sec D. 2 sec
Use synthetic division to find the quotient and remainder.(x3 - 1) ÷ (x - 1)
A. x3 + x2 + x + 1
B. x2 + x + 1 + 
C. x2 + x + 1
D. x3 + x2 + x + 1 + 
Write the complex number in polar form. Express the argument in degrees, rounded to the nearest tenth, if necessary.-6i
A. 6(cos 180° + i sin 180°) B. 6(cos 270° + i sin 270°) C. 6(cos 0° + i sin 0°) D. 6(cos 90° + i sin 90°)