Simplify the expression using the imaginary unit i.
A. 17i
B. -i
C. ±17
D. -17i
Answer: A
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Find the value or values of c that satisfy the equation 
= f'(c) in the conclusion of the Mean Value Theorem for the given function and interval.f(x) = tan-1 x, [-1, 1]
Round to the nearest thousandth.
A. 0.523 B. ±0.523 C. 0, 0.523 D. -0.523, 0, 0.523
Solve by completing the square.a2 - 10a + 9 = 0
A. a = ± 
B. a = 9, a = 1
C. a = -9, a = -1
D. a = 8, a = 1
Use the given graph to estimate the left Riemann sum for the given interval with the stated number of subdivisions.
?
?
?
A. Left Sum = 1 B. Left Sum = 2 C. Left Sum = - 2 D. Left Sum = 0 E. Left Sum = - 1
Substitute to find the value of the expression.A train must cover a distance of 2581 miles. The velocity, in miles per hour, of the train is 
where t is the time, in hours, to complete the trip. If the train completes the trip in 29 hours, what is its velocity?
A. 74,849 mph B. 89 mph C. 84 mph D. 0.01 mph