Suppose you create a graph of the cost function, C = 20n + 500 of a new bookstore, and you also graph the revenue function, r = 25n, where n is the
number of books sold. On your graph, would the point n = 150 be in the loss
section, the profit section, or the break-even section?

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2