Five more than eight times a number is 29

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?

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

Find the root(s) of f (x) = (x- 6)2(x + 2)2.