Name a point that is coplanar with points Q, G, and C. Can someone help me

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

See attachment below and find the equivalent of tan(∠qsr)

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.