An investor divides a total amount of money between two investment funds, Fund A and Fund B. Fund A offers an annual return of 4%, and Fund B offers an annual return of 7%. The total annual return from these investments, in dollars, is represented by the equation , where is the amount, in dollars, invested in Fund A and is the amount, in dollars, invested in Fund B.
If the investor only invested in Fund A and received a total annual return of $1500, what was the total amount, in dollars, invested in Fund A?
