Question

Dr. George is ready to by a new iphone and has two different carriers he can go with. Cell 4 U can be represented by the function c(x)=10x+75. Data House can be represented by the function c(x)=15x+50. X represents the amount of data used. Accessories will cost $135 Dr. George usually uses 4 gigs of data a month.
1. How much will the phone cost at Cell 4U?

2. How much will the phone cost at Data House?

3. Which company should Dr. George go with? Justify your answer.

Answer 1

At Cell 4U it would cost $250 with accessories 
At Data House it would cost $245 with accessories.
He should buy a phone from Data house because it will be 5 dollars cheaper