Question

An electrician charges $40 for each hour plus a $25 surcharge. The electrician raises the charges for each hour by $5. Write an equation that represents the new cost c of a job that take h hours

Answer 1

c = 45h + 25

Explanation:

The only difference between what the electrician used to charge and what he/she charges now is an increase of $5. Therefore, instead of charging $40 he is now charging $45. Using this new information we can create the following equation to calculate the total cost of a job. We do this by multiplying the cost per hour ($45) by the total number of hours (h) and then adding the surcharge.

c = 45h + 25