John sells t-shirts. Plain shirts cost $5 and graphic shirts cost $7. In order to match his product costs, he must make at least $1,200.
a) Write an inequality to represent this situation.
b) If he sells 150 plain shirts and 60 graphic shirts, will he be able to cover
the product costs?
c) If he sells 90 graphic shirts, what's the minimum number of plain shirts he
must sell to break even? PLEASE DONT COMMENT UNLESS YOU CAN HELP I NEED HELP.