Write in terms of i.2 - 
A. 2 - 4i
B. 2 - 4i
C. 2 - 4
D. 2 + 4i
Answer: A
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Provide an appropriate response.Which formula is not equivalent to the other two? I.
II.
III.
A. II B. All are equivalent. C. I D. III
Solve the problem.For a car traveling at x mph, stopping distance is estimated by the formula D = 
x2 + 
x. Find a (maximum) safe speed for a stopping distance of 580 feet. Round your answer to the nearest mph.
A. 58 mph B. 62 mph C. 67 mph D. 70 mph
Perform the division.
A. z - 10
B. z + 10 - 
C. z - 10 + 
D. z + 10
Solve the problem.Suppose that the change in pressure of the oil in a reservoir can be approximated by: P(x) = x3 - 18x2 + 81x where x is time in years from the date of the first reading. This function is valid for 
By sketching a graph of P(x), estimate during what time period the change in pressure is decreasing.
A. In years 5 to 9 B. In years 0 to 9 C. In years 3 to 9 D. In years 0 to 3