PLEASE HELP! WILL GIVE BRAINLIEST!

Icould really use some with this question.

Select the graph of the solution. click until the correct graph appears. |x| = 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.