Robert prepares his tax return each year. A tax preparer would charge him $75 for this service. Over a period of 10 years, how much does Robert gain from
preparing his own tax return, assuming he can earn 6 percent on his savings?

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step-by-step explanation:

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: