the first ounce of postage charges for sending letters to country x is $0.79. each additional ounce is $0.55. how much is the postage for a letter weighing 8 ounces?

Respuesta :

1 ounce = $0.79
7 ounces = $0.55 x 7 = $3.85

$3.85 + $0.79 = $4.64

the postage of a letter weighing 8 ounces would cost $4.64