Solve each problem by locating ordered pairs on the graphs.

The graph indicates personal spending in billions of dollars on medical care in the United States.

(a) If (x, y) represents a point on the graph, what does x represent? What does y represent?(b) Estimate spending in 2016.(c) Write an ordered pair 1x, y2 that represents approximate spending in 2016.(d) In what year was spending about $2200 billion?

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Personal Spending on Medical Care 2900 2800 2700 2600 Spending (in billions of dollars) 2500 R 2400 2300 2200 2100 2010 2011 2012 2013 2014 2015 2016 Year