A mail carrier leaves the post office at 10:00 A. M. and travels 4 mi south, then 7 mi east, then 5 mi south, then 10 mi west, and 9 mi north. At the end of her route, how far and in which direction is the mail carrier from the post office? a.
She is 5 miles east of the post office
c.
She is 3 miles west of the post office
b.
She is 10 mi south of the post office
d.
She is 8 miles west of the post office