I need help look at the pics

Consider the function f(x)=-5x+3 what is f(-2)

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)?

Me n o w. i need t h i s. 10 points