Question 697075
Your equation below is correct:
15,000,000=10,000,000{{{e^(0.04t)}}}
dividing each side by 100000:
15=10{{{e^(0.04t)}}}
15/10 = {{{e^(0.04t)}}}
3/2 = {{{e^(0.04t)}}}
now, you take the "natural log" (ln) of both sides to get:
ln(3/2) = 0.04t
ln(3/2)/0.04 = t
10.14 = t
that's 10.14 years after January 1, 2009:
so, that's approximately:
March 1, 2019