Hey, I have these 3 problems that I need to make sure I can do right for an exam Monday.

Here's are the three: (screenshots)

Screenshot by Lightshot

Screenshot by Lightshot

Screenshot by Lightshot

I've tried to do them but had no success. Here's what I did for each problem:

Problem 1: I didn't try for x, but I tried y. So we know all the interior angles add up to 180. So, (y+8) + 74 + x (where x is the top angle) = 180. Solve for y: y + 84 + x = 180. y+84=180 - x. y=96-x. And there I'm not sure where to go since it's not one of the answers. If I solve for y without the x, I just get 96 and that isn't an answer either.

Problem 2: Ok so I know if the two lines are parallel, the same side interior and exterior angles are supplementary to each other. So can't I just take one of the expressions, say angle 3, 8x + x (where the other x is the supplementary angle, angle 4) and solve for x? I tried that: 8x+x=180 9x=180 x=20, but 20 isn't in the answers.

Problem 3: For this problem, my teacher explained it the last 5 minutes of class so I didn't really get to take notes on it. I know that within the 2 parallel lines 2 triangles form and the 56 degree angle is part of a 360 circle. I just need to know how to work it out.

Thanks.