Prove using composition of functions that the following set of functions are inverses of each other. Show work please!!!

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

How can you tell when x and y are not directly proportional?

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.