Please someone help ASAP

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?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0