Hm i dont know

Three times the sum of a number and seven is negative thirty-six. what is the number?

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)?

How does reflecting or rotating a figure change the interior angles of the figure?