Shelly bought 7 boxes of fish food and 2 packets of cat food. each box of fish food contained 6 pouches, and each packet of cat food contained 4 pouches. how many more pouches of fish food than cat food did shelly buy?

34 more pouches

7 boxes - fish food; 1 box contained 6 pouches

Total amount of fish food is 7 × 6 = 42 pouches of fish food

2 packets - cat food; 1 packet contained 4 pouches

Total amount of cat food is 2 × 4 = 8 pouches

How many more pouches of fish food than cat food did Shelly buy?

42 pouches - 8 pouches = 34 pouches

Therefore there was 34 more pouches of fish food than cat food

4th option is correct xy=-10

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b and c

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