Question 49963
Revenue = -o.1x^2 + 130x and the cost to produce x inkjet printers is given by Cost = 40x + 8000. Express the company's profit in terms of x. 
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Profit = Revenue - Cost
Profit = -0.1x^2+130x - (40x+800)
= -0.1x^2+90x-800
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Use this expression to find the profit from selling 400 inkjet printers.
P(400)=-0.1(400^2)+90(400)-800
P(400)= $19,200.00
Cheers,
Stan H.