Answer:
I can't see the picture or handwriting
The answer is 150 because 30+150=180
Answer: 250
10 times itself or 10^2 = 100
(100)(5)=500
500/2= 250
To graph y=-7x-3, you're going to make your first coordinate at (-3,0) b/c that is your y-intercept and you will continuously move down 7 and right one.
To graph y=4, you will simply make a horizontal line through the to coordinate (4,0).
Hope that helped.
I apologized that you have not been helped yet, But the answer is (0,-5). Again, I am so sorry that you were not helped properly :)