Which formula can be used to find the account balance ??

Answer:
The correct answer is option C.
Step-by-step explanation:
Simple interest
S.I = [tex]\frac{P\times R\times T}{100}[/tex]
P = Principal amount
R = Rate
T = Time period
We have:
P = $250
R = 3%
Amount present at beginning of year 14 means that amount made in 13 years of time period = A
T = 13 years
[tex]A=P+S.I[/tex]
[tex]A= \$250+\frac{\$250\times 3\times 13}{100}[/tex]
A = $347.50
The general formula of the given situation will be:
[tex]A= \$250+\$250\times 0.03\times (n-1)[/tex]
The amount in beginning of year 14 wil be $347.50.