Question

Kira is putting money into a savings account. She starts with $550 in the savings account, and each week she adds $30.Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Kira has been adding money. Write anequation relating Sto W. Then use this equation to find the total amount of money in the savings account after 12 weeks.Equation:음Total amount of money after 12 weeks:

Answer 1

Since each week Kira saves $30, then after W weeks, she would have saved 30W. Since she starts with $550, then the total amount of money that she has after W weeks is:

$S=30W+550$

Substitute W=12 to find the amount of money that she has after 12 weeks:

$\begin{gathered} S_{12}=30(12)+550 \\ =360+550 \\ =910 \end{gathered}$

Therefore, the equation that represents the total amount of money after W weeks is:

$S=30W+550$

The total amount of money (in dollars) after 12 weeks is:

$910$