A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

FAN AND MEDAL! What is an approximate average rate of change of the graph from x = 3 to x = 5 for f(x)=-13.333(x - 3)^2+120 ?

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ganeshie8 @geny55 @LifeIsADangerousGame @KAKES1967 @JoannaBlackwelder @Michele_Laino @Nnesha @Bookworm14 @vera_ewing @cj49 @Xaze @zepdrix @JoannaBlackwelder @Hero @ganeshie8 @fratdog123 @DullJackel09 @sourwing @abb0t @Shalante

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\frac{ f(5)-f(3) }{ 5-3 }\]

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(x)=-13.333(x - 3)^2+120 is the equation f(5)=-13.333(x - 5)^2+120 f(5)=-13.333x^2-333.33 @Shalante is this right so far?

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Nope, no need to change the (x-3)

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(x)=-13.333(x - 5)^2+120 is the equation f(5)=-13.333(x - 5)^2+120 f(5)=-13.333x^2-333.33+120 f(5)=-13.333x^2-213.33

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Do not change anything besides the x Plug in x=5 and x=3 Subtract f(5)-f(3) Divide it by 2 since that is the interval difference.

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so how would i solve it? i need to show the steps

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(x)=-13.333(5 - 3)^2+120 is the equation f(5)=-13.333(2)^2+120 f(5)=-13.333(4)+120 ?

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(5)=-13.333(4)+120 f(5)=-53.33+120 f(5)=66.67 ??

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    replace x with 5 to get answer #1 replace x with 3 to get answer #2 (answer #1 - answer #2) / 2

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Shalante did i solve it for x=5 correctly tho?

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yea f(5) is correct.

  13. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok and then f(x)=-13.333(x - 3)^2+120 f(3)=-13.333(3 - 3)^2+120 f(3)=-13.333(0)+120 f(3)=120 ?

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes. now subtract it and then divide by 2

  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    66.67-120/2 -53.33/2 -26.67

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is that right?

  17. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, that is correct.

  18. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok thanks!

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what does this rate represent in this situation? The graph below shows a company's profit f(x), in dollars, depending on the price of pens x, in dollars, being sold by the company:

  20. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -26.67 means the slope is decreasing at an average of 26.67 from x=3 to x=5

  21. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the rate of the profit they are getting. rate is change of y. y is f(x) f(x) is the profit.

  22. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so their profit is decreasing by 66.67?

  23. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You mean decreasing by 26.67?

  24. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh yea lol

  25. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, from 3 shirts sold to 5 shirts, the profit decreased by an average of $26.67.

  26. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok thanks gtg!!

  27. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No problem!

  28. 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

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.