If there is 609 kids at one school and 509 at another school and there was nine teachers Plus two principles how many people are there together

Determine the quotient of the following expression. (15n^2-27n) / 3

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 a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs