ANSWER
$764.85
EXPLANATION
Let x be the deposited amount. We know that her current balance is $2,675.08, her withdrawals totaled $275.00 and she earned $8.74 in interest. Also, the previous balance was $2,176.49.
The new balance is equal to her previous balance, plus the deposit, plus the interest earned, minus the withdrawals,
[tex]2176.49+x+8.74-275=2675.08[/tex]Combine like terms,
[tex]\begin{gathered} x+(2176.49+8.74-275)=2675.08 \\ \\ x+1910.23=2675.08 \end{gathered}[/tex]Solve for x,
[tex]x=2675.08-1910.23=764.85[/tex]Hence, her deposit was $764.85.