Question

Last year, Jenny opened an investment account with $7400. At the end of the year, the amount in the account had decreased by6.5%. How much is this decrease in dollars? How much money was in her account at the end of last year?

Answer 1

if the decreasing amount is 6.5% the r in our decay function will be:

`1-0.065=0.935`

and in one yeat t=1 so the equation will be:

`\begin{gathered} y=7400(0.936)^1 \\ y=6925.4 \end{gathered}`