inverse function?

Question

what's the inverse function for this equation 

 

Q(x) = 9e^0.11x

Answer 1

y = 9*exp(0.11x)

 

Switch x and y......

 

x = 9*exp(0.11y)

 

Solving for y

 

x/9 = exp(0.11y)

 

ln(x/9) = 0.11*y

 

y = ln(x/9)/0.11 = 100*ln(x/9)/11 = (100/11)*ln(x/9)