What is a sum of measures of exterior angles of this figure

Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?