Aplumber charges a flat fee of 77$ to visit a home and examine a clogged drain. the plumber charges an additional 24$ 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+24h

answer the following questions.

(a) what is the total cost for fixing a drain that takes 7 hours?

(b) if the plumber charges a total of 365 $ how long did he take to fix the drain

A. 77+24(7)=$245

B. 12 hours.

Step-by-step explanation:

For b, what you need to do is minus 77 from 365. Then divided by 24.

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

13664

step-by-step explanation:

=cross multiply

=100 x = 13664