What would be the value of $150 after eight years if you earn 12 percent interest per year?

Compound interest formula:  A  =  P(1 + r/n)^(n·t)

P  =  amount invested ($150.00)           r  =  rate, as a decimal (0.12)         t  =  number of years (8)

A  =  final amount                               n  =  number of times compounded per year (1)

A  =  150(1 + 0.12/1)^(1·8)

    =  150(1.12)^8

    =  $371.39