You have a dish full of nickels and quarters. if there are 16 coins together worth $2.20, how many of each coin do you have?
need two equations and solve!
it already provides you with one equation. which is:
n + q = 16

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

there is no question content here, but you for the free points! : d