A customer at a Mexican diner placed an order for 3 buritto bowls which was priced at $x each. He also ordered a plate of corn tacos at $12.96 and was billed for a total of $32.46.
a)
3x + 12.96 = 32.46
b)
2x - 32.46 = 12.96
c)
2x + 12.96 = 32.46
d)
3x – 12.96 = 32.46

(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 .

Can someone explain to me how to do

Two numbers have a sum of -19. one number is x. what expression represents the other number?