Paul's Plumbing charges a flat fee of $90 plus $40/h for a plumbing job. Perfect Pipes charges a flat fee of $60 plus $55 for a plumbing job.

A. Write expressions to represent the total costs of a plumbing job for each company. Let h represent the time, in hours, of a plumbing job. Be sure to label the expression for each company!

B. Is the cost of a 3-hour-long plumbing job the same at both companies. Write and use an equation to find out. Show all work!