Nathan has joined the Frequent Coffee Buyer program with a local cafe The program costs 15 per month which allows him to get a discounted coffee price of 1 5 per cup Answer the questions below regarding the relationship between the of number of cups of coffee purchased and the total monthly cost Answer The independent variable x represents the number of coffee cups purchased and the dependent variable is the total monthly cost because the number of coffee cups purchased depends on the A function relating these variables is T x So T 18 meaning 18 B