Angle relationships with parallel lines can someone help me please answer

Ineed with this problem 21 show steps

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)