What does f(0) = 5 mean?

Factor this polynomial completely x^2-64

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 measures of angles a, b, and c? show your work and explain your answers. 25 points