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OpenStudy (anonymous):
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?
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OpenStudy (anonymous):
@ninaesb
OpenStudy (anonymous):
what are your options ?
OpenStudy (anonymous):
n/10+d/20<= 1/2
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