Find dy/dx (derivative) using implicit differentiation: xe^y=x-y

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Solve this system of equations: y=x2-3x + 12 y=-2x+14 4. substitute the values of x, -1 and 2, into either origina equation to solve for the values of y. what are the solutions of the system of equations?