At least do number 3 so I can help with the rest. That ok with you?
Can't see the graph, but it should look something like this:
Answer:

Step-by-step explanation:
we know that
To find the unit rate , divide the total frames by the total seconds
Let
x ----> the total frames displayed by the video game
y ----> the total seconds

we have

substitute the values

Answer:
X=30
The whole triangle = 180 degrees