Someone help plz!! I will give Brainlist!

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

What percent of the circle below is shaded?

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180