Is 5/16 equal or bigger than 1/2

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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).