Question

If log3 (2x - 1) = 2, what is the value of x?

Option A: x = 5
Option B: x = 7/2
Option C: x = 9/2
Option D: x = 3

Answer 1

I have answered the same question in another post !

Answer 2

Just in case you didn't get it...

this is basically saying....3 raised to the 2nd power = (2x - 1)

so 3^2 = 9

so we have

2x - 1 = 9

we add 1 to both sides..

2x = 10

what does 'x' equal...?

Answer 3

Thanks! I didn't get it before...