You can put this solution on YOUR website! the price of a coat is representedd by (2x-5) dollars. Represent the amount a man paid for (5x-3) of these coats.
"amount paid" = "number of coats" * "price of a coat"
c(x) = (5x-3)(2x-5)
c(x) = 10x^2-25X-6X+15
c(x) = 10x^2-31x+15
c(x) is the amount paid