How do you describe sequences

Sketch one cycle if the cosine function y=2cos2theta

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Revirite the formula to determine the area covered by one can of paint. alyssa and her father are going to paint the house this summer. they know they'll need 6 cans of paint. enter the correct answer. 000 done a formula that describes this scenario is (licierali 000 oo 6 w w = the total area of the walls p = area covered by a can of paint