please answer a and b and show all work when necessary

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Oct 8th, 2015

Thank you for the opportunity to help you with your question!

p(x) =-0.001 x^2 +2.9 x-1000


a) for x= 800

  P(800) =-0.001(800)^2+2.9(800) -1000

              =680 


b)P(x) =-0.001x^2+ 2.9x-1000

           =-0.001(x^2-2900x+8410000)+8410-1000

           =-0.001(x-2900)^2  +7410

profit function is in vertex form.

so 2900 donuts should be made to maximise the profit.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 8th, 2015

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Oct 8th, 2015
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