Bru. hhi :) lol im bored so heres free points yw

When turned about its axis of rotation, which shape could have created this three-dimensional object?

What point is the projection of q on a) r b) s c) t

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?