If 3 pairs of socks cost $13.50,how much will 7 pairs of socks cost?

Based on the figures as marked, /\rqs = —

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?