The formula to calculate the total amount in the savings account, with an interest that's compounded quaterly, a 3% interest and an inicial saving of s is:
[tex]T=S(1.03)^q[/tex]Where q is the number of quarters.
We know that after 10 years (40 quarters) Tori had $1000.
Thereby,
[tex]\begin{gathered} 1000=S(1.03)^{40}\rightarrow S=\frac{1000}{(1.03)^{40}} \\ \rightarrow S=306.56 \end{gathered}[/tex]Tori originally had $306.56 in the savings account
