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.

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

20

step-by-step explanation: