Solve for x

[Guest]

I need help with these problems... Solve for x where x is a real number for..

1)logx+log(x-3)=1
2)e^3k=5 (do I figure this one out with logs?)
3)ln y=2t-3

 

[Gene]

1) log(x)+log(x+3)=log(10)
x(x-3)=10

2) If you mean
e^(3k) = 5
ln(e^3k)=ln(5)
3k=ln(5)

3) Not sure what you want. You can't get a real number with two variables.