Answer:
$10496.77
Explanation:
We have been given that Barbara puts $200 into an account every month that pays 4.5% interest, compounded monthly.
To find the money in the account after 4 years, we will use future value formula.
, where,
R = Regular deposits,
r = Interest rate in decimal form
n = Number of times interest in compounded per year,
t = Time in years.
![4.5\%=(4.5)/(100)=0.045](https://img.qammunity.org/2020/formulas/mathematics/high-school/i1xk1it12qaiaji2xnox45ss29h8ed9ust.png)
Substitute given values:
![FV=\$200((1+(0.045)/(12))^(12*4)-1)/((0.045)/(12)))](https://img.qammunity.org/2020/formulas/mathematics/high-school/hedew415aydc6z7mysxfhq0ppa2rg3ygi6.png)
![FV=\$200((1+0.00375)^(48)-1)/(0.00375))](https://img.qammunity.org/2020/formulas/mathematics/high-school/zurawl28359dzybib3ytfvu2fbgeldbdng.png)
![FV=\$200((1.00375)^(48)-1)/(0.00375))](https://img.qammunity.org/2020/formulas/mathematics/high-school/zjz8v1rsvp5m3m7mpgv411xqzgamq4zdi5.png)
![FV=\$200(1.1968143774194609-1}{0.00375})](https://img.qammunity.org/2020/formulas/mathematics/high-school/2490a0y0lb19d7ibixfybnkqt14xh6fpnp.png)
![FV=\$200(0.1968143774194609}{0.00375})](https://img.qammunity.org/2020/formulas/mathematics/high-school/iyue69hgj1mafiw59kpmhj62a4nr79yn64.png)
![FV=\$200(52.4838339785229066667)](https://img.qammunity.org/2020/formulas/mathematics/high-school/z2uk24j7jxpcanlon9t1cwpeqpfzpplurv.png)
![FV=\$10496.76679570458133334](https://img.qammunity.org/2020/formulas/mathematics/high-school/93o3elnjxjjos94xc5kj97zu5jcybcgpcd.png)
![FV\approx \$10496.77](https://img.qammunity.org/2020/formulas/mathematics/high-school/vvzoc1y55ly7a6nn8hafhmivyktxv5rycq.png)
Therefore, there will be an amount of $10496.77 in the account after 4 years.