Acar rental company charges $39 per day plus 30¢ per mile. a second company charges $45 per day and 25¢ per mile. write and solve an equation to determine the number of miles for which the cost of renting a car for one day would be the same for both companies.

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.