Circumference and area of a circle, , would really appreciate it

Graph the equation. select integers for x

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

Astrid spent $36 on new shoes. this was $12 less than twice what she spent on a new skirt. part a: which equation would solve for how much she spent on the skirt? part b: solve the equation in the workspace provided below. how much did astrid spend on her skirt?