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Applications Chapter 2
Name________________________
Solveshow all work for credit.
Use appropriate units.
4 points each.
1)
A firm is considering a new product. The accounting department estimates that the total cost,
C(x), of producing x units will be
C(x) = 90x + 5440.
The sales department estimates that the revenue, R(x), from selling x units will be
R(x) = 100x,
but that no more than 710 units can be sold at that price. Find and interpret (R  C)(710).
2)
The following bar graph shows the average annual income for single mothers.
i)
Determine a linear function that can be used to estimate the average yearly income for single
mothers from 1995 through 2000. Let t represent the number of years from 1995. (In other
words, 1995 corresponds to t = 0, 1996 corresponds to t = 1, and so on.)
ii)
Using the function from part i, determine the average yearly income for
single mothers in
1996.
iii) Assuming this trend continues, determine the average yearly income for single mothers in
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 Spring '08
 Staff
 Math, Counting

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