One prepaid cell phone company charges $0.029 per minute and a $4 monthly fee. Another company
charges $0.037 per minute with no monthly fee. For what number of minutes per month are the charges
for the first company cheaper?
The first company is cheaper when the number of minutes is over

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.

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.