Ababy elephant weighs 200 pounds at birth. seven years later, the elephant weight is 3,000 pounds. how much weight did the elephant gain each year?

Which of the following is not a subset of {1,2,3}?

Precalculus question, image attached.

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer