Find the solution(s) to x^2-14+49=0

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?

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Which of the following is missing in the explicit formula for the compound interest geometric sequence below?