Question

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

Answer 1

You would just multiply $0.22 8 times then add the $0.54 to it and you get $2.30

Answer 2

$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