a. If he distributes x tomatoes........the number sold is (x - 5)
So.....the amount earned each month is .75(x - 5)
b. distributing 80 ..... .75 (80 - 5) = .075 *75 = $56.25
c. Similar to the first, we have .60 (x - 3)
d. So we have
.75 ( x - 5) + .60 (x - 3) =
.75x - 3.75 + .60x - 1.80
1.35x - 5.55 ......he is correct.....!!!!