Maria purchased a 2 lb box of dog food with 75 cents off coupon she also Madden another coupon to receive a rebate for a dollar if p represents the original cost what did she pay for the dog food after receiving all rebates what equation is used

Let's break down the information given:

Original cost of the dog food = p

Coupon discount = 75 cents = $0.75
Rebate amount = $1.00

Now, let's calculate the final amount paid after receiving all rebates:
Final cost = Original cost - Coupon discount - Rebate amount

Final cost = p - $0.75 - $1.00

The equation used is:
Final cost = p - $1.75