If z varies inversely as w and z=40 when w=0.1, find z when w=20

What is the equation of the graph below? y=sec(x)-4

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?