3. some investments in the stock market have earned 12% annually.  at this rate,  earnings can be found using the formula a = p(1.12)n, where a is the total value of the investment, p is the initial value of the investment, and n is the number of years the money is invested. if $5000 is invested in the stock market at this annual rate of return, what is the expected total value after 20 years? ( show your work so i can understand how you got that answer! in advance! )