Express the number in terms of j.
A. 10j
B. ±10
C. -j
D. -10j
Answer: A
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 cos t + cos 5t, y = 5 sin t - sin 5t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Solve the problem.Suppose c(x) = x3 - 20x2 + 30,000x is the cost of manufacturing x items. Find a production level that will minimize the average cost of making x items.
A. 9 items B. 12 items C. 11 items D. 10 items
Integrate the function.
A. 
4 + C
B. 
4 + C
C. 2 e-6x
4 + C
D. 
+ C
Solve the problem.Jill is 7 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 2 kilometers per hour. They meet in 2 hours. How fast is Joe walking?
A. 3.5 kilometers per hour B. 2.5 kilometers per hour C. 2 kilometers per hour D. 1.5 kilometers per hour