4. Suppose you invest $1000 in an account that pays 6% interest, compounded annually. The amount, A, in dollars, in the account after any given time, t, in years, is given by the equation A =...

4. Suppose you invest $1000 in an account that pays 6% interest, compounded annually. The amount, A, in dollars, in the account after any given time, t, in years, is given by the equation A = 1000(1.06)^t . Determine how long it takes for your investment to double, and to triple, to the nearest tenth of a year.