Concept explainers
For the following exercises, use the graph in Figure 3, showing the profit, y, in thousands of dollars, of a company in a given year, x, where x represents years since 1980.
In 2004, a school population was 1250. By 2012 the population had dropped to 875. Assume the population is changing linearly.
a. How much did the population drop between the year 2004 and 2012?
b. What is the average population decline per year?
c. Find an equation for the population, P, of the school t years after 2004.
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College Algebra
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