If you only have $25.00 to spend on pizza it can not exceed that limit, so your total amount needs to be more than or equal to money the pizza slices cost
since you have $25.00, you can only spend up to that much money, so it will have to be <u>less than or equal to </u>, and since p = slices of pizza, you multiply that by 3.50 to know how much you can buy.