Paul is adding mulch along the edge of his driveway. He orders 7 bags of mulch for $392. How much would it cost if Paul orders 9 bags instead? A. $392
B.$448
C.$504

The answer is C.
you would take the $392 and divide it by 7 which equals 56. That means 1 bag of mulch equals $56. So if Paul wants 9 bags, you would add the cost of 2 more bags of mulch to the $392.
56x2=112
392+112=504
it would cost $504 for 9 bags of mulch.