Answer:
7 feet
Step-by-step explanation:
You need to foil it out. That's how you get the answer.
(x+4)^20
=
(x+4) x (x+4)^19
=
(x+4)^2 x (x+4)^18
etc.
Could you upload a pic of your problem?
Remember that the slope of a line never changes, so you can choose whatever 2 points you want and you will always get the same slope. Calculate the rise and run (You can draw it on the graph if it helps). Theslope is 2/4, which , of course, you can simplify to ½.
Hoped this helped!
We will need an image but i am happy to change my answer with the correct answer as soon as we have what we need