Mr. and mrs. hartford want to buy a car that cost $8,675 mr. hartford saved $1,305 each month for three months mrs. hartford saved $1,574 each month for three months if they combine their money how much will they have? will they have enough money to buy the car?

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.

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