• May 2nd 2014, 07:52 AM
ben123123
Hey forum, I'm a bit confused on a few questions, if the work is too hard to display just the answer would be alright I could work backwards to see what i did wrong!

1) comparing Log(base9) X -> 3Log(Base9)[3(x+6)]-6 explain what has happened to the graph.

2) Solve 10^(2x-5)=7^(x+4)

3) Solve Log(3x+15)=Log(x+3)+1

4) solve 9^(x-1)=1/3^(4x-1) <-- I got 1/3 for that one not sure if it's correct

5) Solve 3^x = 9^(x^2-1/2)

6) Solve 2Log(Base4)(x+4)-Log(base4)(x+12)=1 <---- I know that one involved doing quadratic forumula or factoring but not sure on how to do.

7) explain steps to solving Log(base2)(Rootsymbol)x^2-8x=log(base2)3

-ben
• May 2nd 2014, 08:58 AM
HallsofIvy
It's hard to know what kind of help you need without knowing what you do understand about logarithms.

Clearly you do know some of the things I started to write because, for problem 4, you say "I got 1/3 for that one not sure if it's correct", which is correct. But you don't show how you got it. Show what you have tried on these problems.
• May 2nd 2014, 09:16 AM
ben123123