Lily was given a $20 bill for her birthday she knows two bike stores but is not sure where is the best deal at mikes bikes $7 dollars and hour but if u pay for two the third one is free how many hours will lily get for her $20 dollar bill

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.