Because of the given information angles 3 and 5 are considered alternate interior angles. Think alternate because they are on opposite sides and interior because they are on the inside.
These types of angles are congruent, therefore if m<5 = 58, then m<3 would also = 58.
273 dollars for 13 hours of work is a unit rate of 273/13=21 dollars per hour. Multiplying this by 8 hours of work, you get 168 dollars. Hope this helps!
