Find the volume of the solid of revolution formed by rotating about the x-axis the region bounded by the curves.y = , y = 0, x = 1, x = 9  Give your answer in exact form.

A. ?
B. ? ln 9
C. ? ln 9
D. 3?


Answer: B

Mathematics

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Divide, if possible. If a quotient is undefined, state so.

A. -3 B. 3 C. -2 D. -4

Mathematics

Graph the equation and give the coordinates of the vertex.y = -x2 - 4x - 3

A. (-2, -1)

B. (2, 1)

C. (-0.5, 3.25)

D. (-2, 1)

Mathematics

Use the preference table to answer the question.Four students are running for president of their dormitory: Debra (D), Farah (F), Jorge (J), and  The votes of their fellow students are summarized in the following preference table.Who is declared the new president using the pairwise comparison method?

A. Hillary B. Farah C. Debra D. Jorge

Mathematics

Write the first four terms of the sequence.an = 2n 

A. a1 = 4, a2 = 8, a3 = 16, a4 = 32 B. a1 = 1, a2 = 4, a3 = 9, a4 = 16 C. a1 = 1, a2 = 2, a3 = 4, a4 = 8 D. a1 = 2, a2 = 4, a3 = 8, a4 = 16

Mathematics