Steph works two jobs to earn money for college. she makes $9.00 per hour as tutor and $7.50 per hour working as a cashier. this week she worked a total of 16 hours at these two jobs. if she worked 4 more hours tutoring than as a cashier, how many hours did she work as a cashier? how much money did steph earn this week?

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.