The Answer is in the attached file, I'm sorry if I can't write it on laptop, hope this helps man! :) and tell me if it's correct or wrong when your teacher see's it.
3*5=15 15*8=120 Answer: 120m
I'm guessing this is a slope problem, so the equation would be like this: y = mx + b where m is the slope and b is the y-intercept.

Using this,

Which is equal to,
Answer:
700
Step-by-step explanation:
100:2
???:14
14*100
=1400
1400/2
=700