Someone help me solve this

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

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.

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left