I’ve never been so confused, this is due in a few minutes, pls help if you can!

Given:

m(ar QT) = 220

m∠P = 54

To find:

The measure of arc RS.

Solution:

PQ and PT are secants intersect outside a circle.

If two secants intersects outside a circle, then the measure of the angle formed is one-half the positive difference of the measures of the intercepted arcs.

Multiply by 2 on both sides.

Subtract 220 from both sides.

Multiply by (-1) on both sides.

The measure of arc RS is 112.

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right