<PRE><B>Question 361679</B>
If you hire the Sod Guys to lay 3000 square feet of sod, it will cost $8300. If you get them to lay 1560 square feet it will cost $6540. ---------------------------------------------
Two Points: (3000,8300) and (1560,6540)
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slope = (6540-8300)/(1560-3000) = 1760/1440 = 11/9 
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Form: y = mx+b
8300 = (11/9)(3000) = b
b = 4633,33
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Equation:
cost = (11/9)(area)+4633.33
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How much will it cost to get 3250 square feet? 
c(3250) = (11/9)3250 + 4633.33
c(3250) = $8605.55
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Cheers,
Stan H.
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