Please help me with these 2 questions asap. I BEG U

the first one is 80 and the second one is 7

Step-by-step explanation:

1. 100° {Vertically opposite angles}

2.

step-by-step explanation:

once you graph it hit 2nd (the blue button) and graph

that takes you to a table of coordinates

on the left is x coordinates and on the right is y coordinates and an empty box

(you may have to scroll up/down in order to get ( x, 0)