Does someone understand this question and can help

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.

How do i do this activity, is appreciated

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost