Doctorates For the period 2005–2009, the number of new doctorates in mathematics employed in academic positions can be modeled by y = 28.5x + 50.5, where x is the number of years after 2000.
a. If the model is accurate, algebraically determine the year in which the number of doctorates employed was 250.
b. Use a graph to verify your answer to part (a).
c. Use your graph to find when the number of doctorates employed was below 250.
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