Pls help me i’ll give brainliest

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

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

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?