The percent of mothers who work outside the home and have children younger than age 6 yr is approximated by the function
, where t is measured in years, with
corresponding to the beginning of 1980.At what rate was the percent of these mothers changing at the beginning of 2001?
A) 0.94 %/yr
B) 0.78 %/yr
C) 0.97 %/yr
D) 1.32 %/yr
Correct Answer:
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