Answer
5562.50
Work Step by Step
Write 9% as a decimal
I=5000$\times$ $\times$ 0.09 $\times$ 1.25
Multiply
I= 562.50 dollars
The simple interest is 562.50 dollars.
total amount = principal + interest
total amount = 5000+562.50= 5562.50 dollars
Total amount after 15 months will be 5562.50 dollars