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Ronald is making hats and scarves for charity

Math

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Ronald is making hats and scarves for charity. He has enough yarn to make 5 hats and 8 scarves. It takes him 12 hours to knit a hat and 6 hours to knit a scarf; he has 20 hours to knit. Let x represent the number of hats made. Let y represent the number of scarves made. Which inequalities are among the constraints for this situation? Select each correct answer.

a: x≤5
b: x+y≤20
c: 12x+6y≤20
d: y≤8

e: 5x+8y≤20