How many terms are in the algebraic expression Negative 2 a minus b?

Which statements regarding the diagram are true? check all that apply.

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)?

If you could answer these your a life saver