From the grocery store you need to purchase 1/2 lb cheese, 3 lbs sliced ham, 2 loaves of bread, 4 bags of potato chips, and 1 container of salsa. you have a coupon for $4.00 off if your purchase totals more than $15.00 or 10% off if the total is more than $20.00. the food sales tax is 3%. what is the total cost of the groceries after the best discount is given and taxes applied?