Old McDonald has 21 animals on his farm. Some are cows and some are chickens. The animals have a total of 66 legs. Write and solve a system of equations to figure out how many cows and chickens are on Old McDonald's farm. (Make x the number of cows.)

I've done the work and it still says my answer is wrong. Help!!

1) your friend taylor missed class today and needs some identifying solutions of systems. explain to taylor where to find the solution(s) of any system using its graph 2)taylor graphs the following in desmos and decides that f(x) = g(x) at x = 0, x = 1, & x = 3. f(x) = 2x+1g(x) = 2x2+1 provide taylor some feedback that explains which part of the answer was incorrect and why.