Can I get help.

Which expressions are equivalent to -6 + 3m

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)?

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)