The answer to this problem is 1 :)
4/10 = 12/20 since 4/10 = 10/20
Hello!
There is an existing logarithmic property that states that

is equal to

.
Following that property, we can tell that

would be equal to

.
ANSWER: 
(third option)
Answer:
It is found when the line starts moving up or down.
Step-by-step explanation: