Solving Polynomials, please help me.

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3

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.

What are the solutions of the following system? y=-2x^2 y=x-2