Principle amount deposited by Thurston = $8400
Rate of interest = 2.5%
Time period = 14 years
Simple interest formula = [tex]\frac{P\times R\times T}{100}[/tex]
So, interest becomes = [tex]\frac{8400\times 2.5\times 14}{100}[/tex]
= $2940
Hence, the future value if Thurston’s account after 14 years will be =
[tex]8400+2940[/tex] = $11340