Tom counted the number of cards in his collection for 10 weeks. by week 5, he had collected 12 cards.

how many weeks did it take to have 15 cards collected?

a.
7

b.
8

c.
9

d.
10

Find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified line. y = x â’ 1 , y = 0, x = 5; about the x-axis v = sketch the region. sketch the solid, and a typical disk or washer.