Sam Monte deposits $21,500 into Legal Bank which pays 6 percent interest that is compounded semiannually. What will Sam have in his account at the end of 6 years?

=P (1+r) t where P is the principal, r is the rate (over the compounding period, expressed as a decimal), and t is the number of periods to compound over.

its A=P (1+/n) ^nt