Find angle a

this is so confusing I've asked 3 tutors and they all don't know how to do this​

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?

Nine people are going to share a 128-ounces bottle of soda. how many ounces will each person get drink? choose the correct equation and answer for this situation