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!