Concept explainers
Population Model The following data represent the population of the United States. An ecologist is interested in building a model that describes the population of the United States.
(a) Using a graphing utility, draw a
(b) Using a graphing utility, build a logistic model from the data.
(c) Using a graphing utility, draw the function found in part (b) on the scatter diagram.
(d) Based on the function found in part (b), what is the carrying capacity of the United States?
(e) Use the function found in part (b) to predict the population of the United States in 2012.
(f) When will the United States population be ?
(g) Compare actual U.S. Census figures to the predictions found in parts (e) and (f). Discuss any differences.
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Precalculus Enhanced with Graphing Utilities (7th Edition)
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