Question

Could someone please help me with this? :)

log5x + log4 = 3

HINT: Notice that the logs are in base 10.

Answer 1

There is a rule of logs that is helpful here.

\( \log a + \log b = \log ab\)

Can you apply that rule to the left side?

Answer 2

log 20x = 3

Answer 3

Once you apply that rule, then change the log equation into the exponential form using this:

\(\log_b x = y \iff b^y = x\)

Answer 4

Okay that makes sense.