Question

A. 20
b. 5
c. 40
d. 45

Answer 1

I think it could be B

By divide but iam not sure sorry if it wronge

Answer 2

C, 40

Explanation:

You can set up the equation as 20+4x=180

180 is the total angle of the line

4x=160 and divide each side by 4

x=40