PLS HELP ME What is the equation of the following graph in vertex form? y=(x - 3)²-1
y = (x + 3)2-1
y=(x-4)2 - 2
y = (x - 4)2 + 8

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.