What is the reason for line 3??

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

(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 .

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?