Answer:
For the extra credit question just plant the dotss and if its a square then do what it sais
Step-by-step explanation:
Let's divide the numbers:
12/8= 1.5
15/10= 1.5
The scale factor was a dilation of 1.5, or 3/2.
I hope this helps!
You would just subtract/add like you normally would from left to right because its a subtract and add operation.
Hope that helps :)
From the definition of logarithm, we know that:

In this case

and

so:
The answer is 6 :))))))))