Logarithmic Functions & Indices + Quadratic function Problems

[wqshafi]

Please see my questions attached.
I look forward to your help in solving these.
Is there any way to copy equations from Word Equation Editor into this forum?
I haven't been able to..

 

[pka]

You have shown no work of your own.
You need to show some effort on your part.

As for writing mathematics use LaTeX tags.
[TEX]\log_2(x)+\log_4(x)=2[/TEX] gives \(\displaystyle \log_2(x)+\log_4(x)=2\).