Select the equivalent expression.(x−3⋅y3)−7=?
A.) x^21⋅y^-21
B.) (xy)^0
C.) x^−10⋅y^-4

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.