Fill in the missing notations

Select the number of ways in which a line and a circle can intersect

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.

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