The value of x in simplest radical form

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

Which graph represents the function f(x)=4[x]?