Last One, I'd really appreciate it!

n = 20

Step-by-step explanation:

Since the triangles are similar, we can create a common proportion.

Now you have to solve this proportion

Start by cross multiplying, and you get 12n = 240

Divide both sides by 12, and you get n = 20.

Hope this helped

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)

angle efh= angle egh