They seem awfully proud that their "seasoned beef" is 88% beef...when we make tacos at home our "seasonings" damn sure aren't anywhere near 12% (I would guess less than 1%)...so what the hell is in that 12%?
Find equations of the tangent line to the graph of the equation 3x^3y-xy^2=y^3-3 at the point (-1,1) first by assuming that y=y(x) and then by assuming that x=x(y). Make sure that these equations are equivalent.