Scripzz Scripzz 30-09-2018 Mathematics contestada John starts a saving account with $100. Every week he adds $6 to his account. Which equation can be used to determine the number of weeks, w, after which John's account reaches $220?A: 6w + 100 = 220B: 6w - 100 = 220C: 6w + 220 = 100D: 6 + w = 220