The answer is 157 degrees because the line segment is 180 and if <AFB is 23, you take 23 away from 180 and you should get 157. To check, add 157 to 23 or take away 157 from 180.
If the lines are congruent it should be 2 because 4 should be double of x
Answer:

Step-by-step explanation:
<u><em>Formulate the equation of the polynomial function</em></u>
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<em>I hope this helps you</em>
<em>:)</em>