(b) Find a power model and a quadratic model for the data. (Round all numerical values to four decimal places.) power model y(x) = quadratic model y(x) = (c) Which model from part (b) approximates more accurately the data point for 2020? O power model O quadratic model (d) Use the quadratic model to predict the 2035 expenditures for national health care. (Round your answer to the nearest billion dollars.) billion dollars

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