A plumber charges a flat fee of $ 79 to visit a home and examine a clogged drain. The plumber charges an additional $29 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=29h+79
Answer the following questions.
(a) If the plumber charged a total of $398, how many hours did he spend fixing
the drain?

(b) What is the total cost for fixing a drain that takes 5 hours?

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?