Question

Can someone help?

Answer 1

One idea is:

Paul wants to buy an iphone X. He has savings of $100 to start with. Local McDonalds pays $7 per hour (after tax) to students on summer break for helping out at the counter. The iphone costs $1000. At least how many hours does  Paul need to work at McDonalds to be able to afford the iphone.

So, that matches ax+b>c in that

a is the hourly earning

b is the initial savings

c is the price of the iphone