Answer:
90
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given

Required
Find a
Take log of both sides

Apply law of logarithm

Divide both sides by a

Multiply both sides by -9

Apply law of logarithm

Cancel out log

Rewrite as:

Apply law of indices


6+ because if you you f 1 and f 2 you can times them. by the way don’t listen to any of the I just want point