how about
5n + 10d ≤ 50
n + 2d ≤ 10 , where n and d are whole numbers
A very old vending machine accepts only nickels (n) and dimes (d). Candy costs up to $0.50, but sometimes the machine will dispense candy without any coins being inserted into the machine. Which inequality shows all of the ways to obtain a candy bar from the machine?
1 answer
1 answer