Teachers Salaries The average salary (in thousands of dollars) for elementary school
Chapter 0, Problem 101(choose chapter or problem)
Teachers Salaries The average salary (in thousands of dollars) for elementary school teachers in the United States from 1990 to 2002 is approximated by the model where represents the year, with corresponding to 1990. (Source: National Education Association) (a) According to this model, when was the average salary at least $32,000, but not more than $42,000? (b) According to this model, when will the average salary exceed $48,000?
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