Question

At a local carnival, a hot dog costs $1.50 each and water costs $0.80 each. You want to buy food and water for yourself and your friends but do not want to spend more than $20. Which inequality represents how many hot dogs and how much water you can buy?

Answer 1

Let x be the amount of hot dog and let y be the amount of water. So you will pay for it 1.50*x+0.80*y. Since you do not want to spend more than 20$, it should satisfy the inequality 1.50*x+0.80*y<=20.