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 your total purchase?

Cheese: $1.99/lb
Ham:$3.29/lb
Bread:$1.59/loaf
Potato Chips: 1.99/ea OR 2 for $3.00
Salsa: $1.39/ container
Please provide steps, thank you (WILL GIVE BRAINLIEST)