A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

egracer

  • one year ago

Sandi tracks her calories burned during water aerobics class. The number of calories she burns is expressed by the function c(t) = 350t, where t is the number of hours spent doing water aerobics. To burn more calories, Sandi wears ankle weights during her class. The number of calories she burns while wearing ankle weights is expressed by the function b(c) = 1.2c, where c is the number of calories burned doing water aerobics without weights. Which of the following composite functions expresses the calories, as a function of time, Sandi burns while doing water aerobics with ankle weights?

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

    the options are b[c(t)] = 351.2t b[c(t)] = 420t c[b(t)] = 351.2t c[b(t)] = 420t

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

    Open study kind of sucks nobody ever helps me..

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

    Is it C????? thats what i got through by calculations

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

    @ganeshie8 @Hero @phi

  5. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    first find b(t) if b(c) = 1.2c, then what is b(t)?

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

    b(t)=351.2 @Vocaloid

  7. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    uh, not quite all we're doing is replacing "c" with "t" so, if b(c) is 1.2c, then what is b(t)?

  8. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    hint: all you need to do is replace "c" with "t"

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

    1.2t??

  10. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right now, we have b(t) = 1.2t now we need to find c(b(t)) if c(t) = 350t, then what is c(b(t))? hint: replace "t" with "1.2t"

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

    350c(1.2t)

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

    im not really sure I'm a little confused

  13. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    c(t) = 350t c(b(t)) = c(1.2t) = ?

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

    350(1.2)?

  15. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    almost... if c(t) is 350 times t, then c(1.2t) is 350 times ____ fill in the blank

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

    that is so confusing could you break it down some more its really confusign me

  17. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    c(t) = 350*t c(1.2t) = 350*___ fill in the blank

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

    350 times 1.2 thats all i can think of

  19. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    almost, you're missing something important

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

    the t?

  21. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes!

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

    so its 350*1.2t

  23. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah, and what do you get when you multiply?

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

    420t

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

    so would it be D?

  26. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ah, it should be B, my mistake b(c(t)) = 420t

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

    thank you so much

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

    EVERYONE B WAS CORRECT.

  29. 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.