Marie purchased a 2 pound box of dog food with a 75 cent off coupon.she also mailed in the box top to receive a company rebate for a 1.if p represents the original cost what did she pay for the dog food after receiving all rebates

Let the original cost of the dog food be represented by p.

After using the 75 cent off coupon, she paid p - 0.75 for the dog food.

After mailing in the box top to receive the company rebate, she paid p - 0.75 - 1.

So, the final cost she paid for the dog food after receiving all rebates is:
p - 0.75 - 1 = p - 1.75.