Answer: 22
Step-by-step explanation:
Lines a and b are cut by transversal f.
Then from the given information,
[ If two parallel lines are cut by a transversal then, the alternate exterior angles are equal. ]

Hence, the value of x so that lines a and b are parallel lines cut by transversal = 22
Hello,
Answer D
A Slopes :5/8,12/5==> no product is not -1
B:slopes: -1/2,3 no
C:slopes:2,-1/3 no
D:slopes:-3/2,2/3 Yes product=-1
<span>She should have multiplied the total of all the choices</span>