Mrs. Rodsan has found a summer job driving the ice cream truck! She keeps track of the data on selling ice cream and finds that the number of sponge
bob pops sold in the first 5 hours she drives the truck can be modeled by
f(x) = 2(x - 2) + 1, where x is the number of hours. After the first 5
hours the number of sponge bob pops sold can be modeled by f (x) = 3x.
How many more spongebob pops will she sell driving for 7 hours than driving
for 4 hours? Show all work?