A plumber charges a service fee of $40 plus $25 per hour for labor. write a function rule for the total cost of hiring the plumber for a job that takes x hours:
c=?

how much would it cost to hire the plumber for a job that takes 4 hours?

What is [tex] {7}^{98 + \sqrt{4} } - 3 \times (64 \div 2 + 4 - 36) \times a = a + 36[/tex]?

How to solve a simultaneous equation involved with fractions?

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance