Answer:
5x+4y<=20
Step-by-step explanation:
We are expected to model the expression for the cost of the softball and the Hardball combined.
le the number of hardballs be x
let the number of softs balls be y
the cost of the hardballs is =5x
the cost of softball is =4y
therefore given that the total cost is =$20
the expression for the cost of x and y balls is given as
5x+4y<=20