Workers on the assembly line produce 4x + 6 boats each day. which expression shows how many boats they produced in 12 days?
a) 12(4x + 6)
b) 12(4x) + 6
c) 12 4x+6
d) 4x+6 12

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.