The cost of T-shirts varies with the number of T-shirts. The data is shown in the graph. If x = the number of shirts and y = the cost, which equation models Bill's direct variation?

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)