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if postage costs $0.54 for the first once and $0.22 for each additional ounce, calculate the cost of mailing a 10-once envelope

Respuesta :

You would just multiply $0.22 8 times then add the $0.54 to it and you get $2.30
$2.74 because the first one is 54 cents so that is one away from the nine. multiply the 22 cents by 9. then add the 54 cents

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