Question 918910
p= -1/20x+1,030, C(x)= 150x+3,000. 
a) R(x) = (-1/20)x + 1,030)x
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b) P(x) = (-1/20)x + 1,030)x -( 150x+3,000)
P(x) = (-1/20)x^2 + 1,030x -150x-3,000)
P(x) = (-1/20)x^2 + 880x - 3000
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c) x = -(880/(-1/10) = 8800, maximizes profit
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d) p(8800) = (-1/20)8800 + 1030 = $590