He didn't distribute 1/3 to x and 15 before solving
Actually the answers A since t is for text messages and it costs .15 and m is minutes and costs .07 so we add those two together to he .15t+ .07m then there's a discount of 2.50 so we subtract. So our final equation is .15t + .07m - 2.50 = C
Answer:
9 tiles needed to fill
Step-by-step explanation:
16 - 7