Eula needs to buy binders that cost $4 each and notebooks that cost $2 each. she has $20. the graph of the inequality 4x + 2y ≤ 20, which represents the situation, is shown. what is the greatest number of binders eula can buy?

She has to buy both binders and notebooks. So, you have to take into account that she has to have both. The closest you can get to $20 while still getting notebooks, is to buy 4 binders. 4 times 4 equals 16. So, she can get 4 binders and 2 notebooks, because then, 2 times 2 equals 4 and 16 plus 4 equals 20.

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