Log math question....???? help?

all this is asking is:

3 to the power of a number is equal to 1/81.

to solve this on your calculator, all you do is log1/81 divided by log 3

this gives you -4.

therefore 3^-4 is 1/81!

The log is asking "3 to what power is 1/81?"

3^4 = 81 and we use a negative exponent to invert, so the answer is -4 instead of 4.

Let log represent log to base 3.

log (1 / 81) = log (1 / 3^4) = log (3^(-4)) = - 4 log 3 = - 4

It's -4.

Let me show you why:

1/81 is the same thing as 1 / (3^4) right?

Now we just get rid of the fraction bar by making the power negative. So 1 / (3^4) is now 3^-4

There you go, the answer is -4

243/81

What are you tring to tell me? I know your need help on this math problem but, it does not make sense. What is the log? 1/81X3? Get some help from your folks.

ok....well what the heck does log mean? is it a variable? wow, this is really confusing, good luck with that

WHAT????

it doesn't make any sense to me. Are you sure that's what it said?

have fun in school

umm idk that doesnt make any sence