Help me answer this please and explain

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Factor this polynomial completely. 12x^2+ x-6

There are three grizzly bears in the city zoo. yogi weighs 400.5 pounds, winnie weighs 560.35 pounds, and nyla weighs 628.29 pounds. what is the average weight of the three bears? (hint: what do they weigh all together? ) a. 502.97 pounds c. 604.38 pounds b. 529.71 pounds d. 794.57 pounds