A plumber charges a one-time fee of $75 plus a fixed hourly rate, h, in dollars. The plumber works at a customer's house for 2 hours and charges a total of $205. What is the fixed hourly rate, in dollars, that the plumber charges?

$65

Step-by-step explanation:

$205 - $75 = $130

$130 / 2 hours = $65

The hourly rate, in dollars, is $65 per hour.

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.