Can someone help me with this and make sure to explain (8th grade math)

The measure of an angle is 117°. what is the measure of a supplementary angle?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Factor the polynomial by its greatest common monomial factor.