Off track biking charges an hourly rate for mountain bike lessons and adds a charge of $100 for insurance. The overvalued cost (C) is represented by the formula, C=40h + 100 where h is the number of hours of lessons. Ben has 7 hours of lessons with off track biking.

How much does he pay?

Dear bot

Your setup is fine, but you can't do grade 4 arithmetic!!!

Ben pays $420 for his 7 hours of lessons with Off Track Biking ($40 x 7 hours + $100 insurance charge).