Graph each equation (only do 3) using the slope and the y intercept

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.