What is the result of triple s then subtract 5 from the result

What is the measure of angle z in this figure? enter your answer in the box. z = ° two intersection lines. all four angles formed by the intersecting lines are labeled. clockwise, the angles are labeled 43 degrees, x degrees, y degrees, and z degrees.

Find the domain and range of the following function f(x) = 51x - 21+ 4

Me d is also an option but i couldn't get it in the picture