The simple interest is given by:
[tex]I=Prt[/tex]where P is the principal, r is the interest rate in decimal form and t is the time.
In this case we have P=800, r=0.043 and t=7, then the interest is:
[tex]\begin{gathered} I=(800)(0.043)(7) \\ I=240.8 \end{gathered}[/tex]Therefore the interest earn is $240.80.
The total amount is in the account is the interest earned plus the principal, therefore after 7 years there are $1040.80 in the account.
