Question

Luigi is an urban planner. As an independent contarctor he charges a $140 fee plus $25 per hour for each contract with the city. Write a function to represent this senerio where y represents the total amount her charges for a project and x represents the total amount worked on the project.

Answer 1

It's simple, if you understand. Let's see.

y= the total cost of everything.
x=the total amount of hours spent on the contract.

It's simple!! 

$140 is the base line. It never changes. So, we begin with $140. Every hour Luigi works, he charges $25. So $140+$25x. Finally, our total amount is y, so $140+$25x=y. abracadabra!!