Please help asap. Look at the picture below

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

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

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?