A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

f(x) = -3x^2-4x+5 f(0) & f(2) Help! I am seriously LOST!

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

    hey, how's it going?

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

    its not lol I am so lost on this it is not even funny!

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

    what is exactly is the question asking?

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

    i have no idea I am given what is typed above with the statement at the begining of the assignment that say simplify or solve...

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

    so does it seem like they want you to find what f(0) and f(2) are?

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

    that would be my guess

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

    are you familiar with what a function is?

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

    i probably would be but this is my first math class in almost 9 years

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

    basically a function is a machine that you feed an x-value, and it spits out a y-value

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

    so whatever number you put into the function machine, it does what it does and you get some output

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

    anyways, it is asking you to feed 0 and 2 into the function and see what comes out. so you need to plug those values in for x and compute the result

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

    so instead of it saying -3x^2 I should put the 0 where that x is so it would read (3)(0)^2 ???

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

    right, to find f(0), put a 0 wherever you see an x and keep everything else the same

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

    so my answers would be 5 and 33?

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

    5 looks right, but how did you get 33?

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

    \[(-3(2))^{2} -4(2) +5\]

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

    are those outer parentheses in the first part in the original equation, or did you add them?

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

    I added them

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

    with a question like this you need to make sure to just plug in the number to the exact equation and not change it in any way. do you see why the extra parentheses make a difference?

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

    i have to go in a second, but the -3 shouldn't be squared, the exponent only applies to x

  21. 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.