Which of the sets of ordered pairs represents a function? (1 point) a = {(2, 7), (1, −5), (7, 2), (2, −9)} b = {(5, 3), (−2, −9), (−3, 8), (9, 3)}

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.