F( − 1 ) = { 4 x + 1 x < 0 4 x + 2 x ≥ 0

Just use socratic it helps you. It’s an app

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

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