Please help me find the equation of the problem and the total amount of the problem :(

Dale starts with $550 in the savings account.
Each week he adds $30 into the savings account.
Let W represents the number of weeks and S represents the total amount of savings.
Then we can set up the following equation
[tex]S=550+30W[/tex]Now let us find out the total amount of savings in the account after 13 weeks.
Substitute W = 13 into the above equation
[tex]\begin{gathered} S=550+30W \\ S=550+30(13) \\ S=550+390 \\ S=\$940 \end{gathered}[/tex]Therefore, the total amount of money after 13 weeks is $940