#### Answer

14,280 dollars

#### Work Step by Step

I=PRT P= 8500 dollars R = 17% T = 4 years
9 months =$\frac{9}{12}$ year=$\frac{3}{4}$ year=0.75 year
Write 17% as a decimal
I=8500$\times$ $\times$ 0.17 $\times$ 4
Multiply
I= 5780 dollars
The simple interest is 5780 dollars.
total amount = principal + interest
total amount = 8500+5780= 14280 dollars
Total amount after 9 months will be 14,280 dollars