Answer:
Step-by-step explanation:
2x+3+2x-12+4x-11=180 degree (sum of interior angles of a triangle)
8x-20=180
8x=180+20
x=200/8
x=25
Now , substitute the value of x.
Chicago=2x+3
=2*25+3
=50+3
=53 degree
Austin=2x-12
=2*25-12
=50-12
=38 degree
Atlanta=4x-11
=4*25-11
=100-11
=89 degree
