Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

onegirl

  • 2 years ago

The cost of manufacturing x items is given by C(x) = 0.02x^2 + 20x + 1800. Find the marginal cost function. Compuare the marginal cost at x = 20 to the actual cost of producing the 20th item.

  • This Question is Closed
  1. onegirl
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    This is what i did but my teacher says it wrong. C(x) = 0.02x^2 + 20x + 1800 C’(x) = 0.04x + 20 C’(20) = 0.04(20) + 20 = 20.8 so this will be the marginal cost at x = 20 Acutal cost of the 20th item : c(20) - c(19) = 0.02(20^2) + 20(20) + 1800 – 0.02(19)^2 + 20(19) + 1800 = 4380.78

  2. onegirl
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Numb3r1 @Loser66

  3. Numb3r1
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You should have had everything in the actual cost calculation after the minus in parenthesis. Redo the calculation taking that into account.

  4. onegirl
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    huh? i dont understand

  5. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy