Answer:
1lb. = $1.60
7lb. = $11.20
Step-by-step explanation:
$<u>1</u><u>2</u><u>.</u><u>8</u><u>0</u> = <u>x</u>
8 1
cross multiply
8x= $12.80
divide $12.80÷8x
x= $1.60
$12.80 = x