The rate of increase of the number of working married couples M (in millions) in the United States from 2008 through 2014 can be modeled by dM = 0.0918t2 − 1.988t + 10.28 dt where t is the time in years, with t = 8 corresponding to 2008. The number of working married couples in 2014 was 31.7 million. (Source: U.S. Census Bureau) (a) Find the model for the number of working married couples in the United States. (b) Use the model to predict the number of working married couples in the United States in 2019. Does your answer seem reasonable? Explain your reasoning
Unitary Method
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Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
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The rate of increase of the number of working married couples M (in millions) in the United States from 2008 through 2014 can be modeled by
dM = 0.0918t2 − 1.988t + 10.28 dt
where t is the time in years, with t = 8 corresponding to 2008. The number of working married couples in 2014 was 31.7 million. (Source: U.S. Census Bureau)
(a) Find the model for the number of working married couples in the United States.
(b) Use the model to predict the number of working married couples in the United States in 2019. Does your answer seem reasonable? Explain your reasoning
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