A plumber charges a flat fee of $77 to visit a home and examine a clogged drain. The plumber charges an additional $26 per hour spent fixing the drain. The total cost, C in dollars), for fixing a drain that takes h hours is given by the following. C = 77 +26h Answer the following questions. (a) What is the total cost for fixing a drain that takes 7 hours?

(b) If the plumber charged a total of $415, how many hours did she spend fixing the drain?
hours=