Isaac currently has $200 in his savings account. He plans to deposit $20 each week.
Which function represents the total amount of money he has saved. (S). as a function of the number of weeks, (W), since he had $200 in the account?
A. S (W) = 200+20w
B. S (w) =200w+20w
C. S (w) = 200-20w
D. S (w) = 20(w+ 200)
