Answer:
Equation: S(W) = 60W + 350
After 19 weeks, total accumulated = S(19) = 1490
Explanation:
The interest rate is not indicated, so cannot take that into account.
Each week, he adds 60$, with initial value of 350$
So the equation is
S(W) = 60W + 350
for W = 19,
S = 60*19 + 350
S(19) = 1490