Andy's rental car charged an initial fee if $20 plus an additional $30 per day to rent a car. buddy's rental car charges an initial fee of $36 plus an additional $28 per day. for what number of days is the total cost charged by the companies same? (hint: write an expression for andy's rental car, write an expression for buddy's rental car and set them equal to each other and solve)

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.