What is the function rule of the line?

Find the third, fifth and seventh term sequence described by each rule a(n)=n+1

X2 + y 2 = 36 x + y = 6 solve the system of equations.

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).