Factor the GCF from each term in the expression.18x4y5 + 21xy2 + 9z2
A. 3z2(6x4y5 + 7xy2 + 3)
B. 3(6x4y5 + 7xy2 + 3z2)
C. 3xyz(6x3y4 + 7y2 + 3z)
D. No common factor
Answer: B
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Express the number in terms of j.
A. j
B. -z6j
C. z6
D. z6j
Solve problems using a calculator.A machine shop has eleven lathes each weighing 2390 pounds, four milling machines each weighing 2430 pounds, and seven drill presses each weighing 387 pounds. What is the total weight of these machines?
A. 38,719 pounds B. 38,698 pounds C. 38,711 pounds D. 38,763 pounds
All references are to the figure below. The distance between A and P is x, and the distance between A and C is y. 
Assuming that B = 63° and x = 24, find A and r.
A. A = 27°, r ? 20. B. A = 37°, r ? 20 C. A = 27°, r ? 20 D. A = 37°, r ? 19
The general term of a sequence is given. Find the indicated partial sum. an = 
; S4
A. 
B. 
C. - 
D. - 