Question

What is the solution of log 3x - 2125 = 3 ?
Choose one answer.
a. x = 1 over 3
b. x = 1
c. x = 7 over 3
d. x = 4

Answer 1

Add 2125 to both sides and then put the equation into its exponential form and solve for x.

Answer 2

Crap sorry its supposed to be 3x-2 then 125=3

Answer 3

\[\log_{3x-2} 125=3\]

Answer 4

Is that it?

Answer 5

yes!

Answer 6

\[(3x-2)^3=125\]

Answer 7

\[(3x-2)^3=5^3\]

Answer 8

Can you get it from there?

Answer 9

what do I do know

Answer 10

\[2^5=x^5\]
What would x be?

Answer 11

2?

Answer 12

\[2^5=(2x)^5\]

Answer 13

What would 2x be?

Answer 14

4

Answer 15

I have no clue..

Answer 16

Here is the concept I am trying to get across to you: If you have two expressions that are equal and the exponents are the same, the only way they could be equal is if the bases are also the same.

Answer 17

\[2^3=5^3\]
Could that possible be true?

Answer 18

no

Answer 19

NO!!

Answer 20

so would it be c

Answer 21

So if
\[2^3=x^3\]
x for sure has to be what?

Answer 22

Yes