<PRE><B>Question 179385</B>
we are talking about a span of 15 years
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so we need to figure out how much the salary increased on a yearly basis
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15000-5100=9900 the amount of increase over 15 years
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9900/15=660
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so salaries have increased by 660 dollars per year
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S(t)=660t+5100.......is our equation :t is time in years
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2010 would be year 24
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S(24)=660(24)+5100=15840+5100=$20940
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so this equation predicts that the Avg Salary in 2010 will be $20,940</PRE>