Hello,
log base 9(m/(m-4))=-2
==>m/(m-4)=9^(-2)
==>81m=m-4
==>80m=-4
==>m=-1/20
what do you mean ¨ what is the distance between¨ what is the rest of the question?
I think 80 I’m not sure ........
12% of Gilbert's contribution is 600
0.12x = 600
x = 600/0.12
x = 5000 <==