Solve.A lamp shade has the geometric form as shown. The total surface area of a lamp shade with a slant height s and top and bottom base radii of r2 and r1 is given by Find an equivalent expression for the total surface area by factoring out a common factor.

A. ?r1(r1 + + sr1 + sr2)
B. ?(r1 + r2)(r1 + r2 + sr1r2)
C. ?(r1 + r2)(r1 + r2 + s)
D. ?(r₁² + r₂² + sr1 + sr2)

Answer: D

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A. 2
B.
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D.

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A. -4z2 B. -12z C. -4z D. 4z

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A. 64x3 + 32x2y + 8xy2 + y3 B. 64x3 + 48x2y + 12xy2 + y3 C. 64x3 + 32x2 + 8y2 + y3 D. 64x3 + 48x2 + 12y2 + y3

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