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Mathematics

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An automatic dog feeder contains 30 cups of food and dispenses 2 cups of dog food each day. What expression can the dog owner use to express the amount of food left in the feeder after d days?

Answer :

sqdancefan sqdancefan

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Answer:

30 -2d

Step-by-step explanation:

The total amount used in d days is 2d (cups). The amount remaining is the initial amount (30 cups) less the amount used. A suitable expression is ...

30 - 2d

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