Question

help please:
log problem

Answer 1

\[3^{x-3}=81\]

Answer 2

3^x-2=3^4
so, x-2=4
x=4+2
x=6

Answer 3

thank you!

Answer 4

u understnd.

Answer 5

so it said x-2=3^4 ..it wouldn't be x-3=3^4?

Answer 6

becoz 81=3x3x3x3=3^4

Answer 7

i know just where is the x-2 coming from?

Answer 8

becoz 3^x-2=3^4
on both side the base r equal so the powers r also equal
x-2=4

Answer 9

okay.

Answer 10

ok,any other questions

Answer 11

yes.
\[\log _{5}x=-3\]

Answer 12

x=5^-3

Answer 13

thank you!

Answer 14

\[\log _{10}100000=x\]

Answer 15

just try it

Answer 16

u don't try

Answer 17

sorry. i was thinking 5

Answer 18

ya 5 thats great

Answer 19

hey can i gave one question?

Answer 20

yes