Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the . y = , y = 7, x = 0

A. ?
B. 98?
C. ?
D. ?


Answer: D

Mathematics

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Use a computer algebra system (CAS) to solve the given initial value problem.y' = , y(0) = 4

A. y = 7 ln- 7x + 4
B. y = 8 tan-1 x - x + 4
C. y = 14 tan-1 x - 7x + 4
D. y = 14 tan-1 x - 7x

Mathematics

Find the y-intercept for the graph of the quadratic function.y = -(x + 3)2 + 25

A. -16 B. 16 C. -5 D. 3

Mathematics

Solve the problem.Jane wants to buy a photocopier. The salesperson has the following information on 3 models. If all 3 are used, a specific job can be done in 50 minutes. If copier A operates for 20 minutes and copier B for 50 minutes, one-half the job is finished. If copier B operates for 30 minutes and copier C for 80 minutes, three-fifths of the job is done. Which is the fastest copier, and how long does it take for this copier to finish the whole job?

A. A is fastest; 120 minutes B. C is fastest; 100 minutes C. B is fastest; 100 minutes D. C is fastest; 120 minutes

Mathematics

Factor using the ac-method.4x4 + 12x2 + 9

A. (2x2 - 3)(2x2 - 3) B. (2x2 + 1)(2x2 + 9) C. (4x2 + 3)(x2 + 3) D. (2x2 + 3)(2x2 + 3)

Mathematics