Question

What is the the solution of
log3x-7 25=2
A- x=-2
B-x=2
C-x=3
D-x=4

Answer 1

I don't understand what is the base and the log in your log ?

Answer 2

Is it \[\huge\color{blue}{ \log _{3x-7}25=2 }\]

Answer 3

That??? @linds ?

Answer 4

I'll assume that's the question if you don't say anything.

Answer 5

Yes it is. I am new to open study and trying to figure out how to work it, sorry

Answer 6

\[\color{blue}{ 2=~~2~\log_{5}(5) =\log_{5}(5^2) =\log_{5}(25) }\]

so lets rewrite it,

\[\huge\color{blue}{ \log _{\color{red} { 3x-7 }}(25)~=~\log_{\color{red} { 5 }}(25) }\]
\[\huge\color{red}{ 3x-7~~=~~5 }\]
\[\huge\color{red}{ 3x=12,~~~~~~~~~~x=4 }\]

Answer 7

It's okay. Just reply accordingly when you are asked to.

Answer 8

Are you clear with how I solved for x ?

Answer 9

Yes I am, thanks!

Answer 10

You welcome! If you have a question, ask don't be shy!