Help me this is so much work and I’m sad

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

In the diagram below? p is circumscribed about quadrilateral abcd. what is the value of x

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)?