Factor the difference of squares.p4 - 81
A. (p2 + 9)(p + 3)(p - 3)
B. (p2 + 3)(p + 3)(p - 3)
C. (1 + 9p2)(1 - 9p2)
D. (p + 3)2(p - 3)2
Answer: A
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Use the reciprocal identities to find the indicated function value.tan ? = 
, find cot ?
A. 
B. 
C. - 
D. - 
Use the fundamental identities to find the value of the trigonometric function.Find cot ?, given that cos ? = 
and ? is in quadrant IV.
A. 
B. - 
C. - 
D. - 
Solve the problem.A rectangular piece of tin has an area of 630 square inches. A square of 2 inches is cut from each corner, and an open box is made by turning up the ends and sides. If the volume of the box is 836 cubic inches, what were the original dimensions of the piece of tin?
A. 17 in. by 44 in. B. 15 in. by 42 in. C. 11 in. by 36 in. D. 13 in. by 40 in.
Add.
A. 1415 B. 1425 C. 1526 D. 1505