Question

Please explain how i would solve this
Solve log x = 4

x = 4

x = 40

x = 1,000

x = 10,000

Answer 1

In general,

log(x) = k

turns into

x = 10^k

Answer 2

why 10?

Answer 3

i plug that into my calculator and get 4

Answer 4

because if you just say "log" without any mention to a base, then it's automatically base 10

Answer 5

Example:

log(x) = 7

turns into

x = 10^7

Answer 6

ohhh. i plugged this in- 10^log(4)

Answer 7

so i just ignore the Log?

Answer 8

once you convert, the log goes away

Answer 9

thanks!