The maturity value of an investment after 42 months is $9704.61. What was the original investment, if

Question:

The value of an investment after 42 months is $9704.61. What was the original investment, if it earned 7.5% compounded semiannually?
Maturity
Maturity is the date on which the life of a transaction or financial instrument ends, after which it must either be renewed, or it will cease to exist. The term is commonly used for deposits, foreign exchange spot, and forward transactions, interest...