Question 868846
Find out how many years it takes $1800 to double at 3.2% interest compounded weekly.

Use equation: A=P(1+r/n)^nt

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Doesn't matter what amount is used, the outcome is the same. All that matters is whether the initial investment
or P, is doubled or tripled, the compounding periods, and the interest rate.
{{{A = P(1 + r/n)^nt}}}
{{{2P = P(1 + r/n)^nt}}}
{{{2P = P(1 + .032/52)^(52t)}}}
{{{2 = (1 + .032/52)^(52t)}}}
{{{2 = 1.000615^(52t)}}} -------- Exponential form
{{{log (1.000615, 2) = 52t}}} ------ Logarithmic form
{{{highlight_green(t = (log 2)/(log 1.000615))}}} ÷ {{{highlight_green(52)}}}