posted by Jon .
I need to find the future population using the model P=42+20ln(11t+1)
t= time in years
I need to find when it will be 180. I have my work below, but I am stuck. The answer I get is not right, it will not add up to 180. Maybe I am wrong some where.
my wrong answer: 1.614193818
When you divide by 11, don't you need to divide e^6.9 by 11 also?