4+9x+7 give me full steps and be fast.

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?

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]