it costs a bicycle shop (432+87X) dollars to make x bicycles and each bicyle can be sold for (240-3x) dollars. PLEASE SHOW ALL WORKING OUT. A) determine an expression for the total profit gained from selling x bicycles.
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Originally Posted by Tessarina it costs a bicycle shop (432+87X) dollars to make x bicycles and each bicyle can be sold for (240-3x) dollars. PLEASE SHOW ALL WORKING OUT. A) determine an expression for the total profit gained from selling x bicycles. Are you sure that you have transcribed that question correctly...?
As the question states: Profit = price - cost (-3x+240)-(87x+432) = -3x-87x+240-432 =-90x-172
i copied the question exactly right. but in the back of the book, the answer for the profit is: P=-3x^2+153x-432
Originally Posted by sedemihcra As the question states: Profit = price - cost (-3x+240)-(87x+432) = -3x-87x+240-432 =-90x-172 This is almost right, but (240-3x) represents the price of one bicycle, so the total price should be x*(240-3x). p(x) = x(-3x+240)-(87x+432) I'm guessing that will result in the book answer.
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