Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

dmartinez130

  • 2 years ago

can someone please help get the answer Solve 2^(x + 3) = 7 Answer a.x ≈ –5.19 b.x ≈ 2.81 c.x ≈ –0.19 d.x ≈ 0.9

  • This Question is Closed
  1. sam30317
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You can simplify it better by: 2^x + 2^3 = 7 Or go to http://www.wolframalpha.com/input/?i=solve+2^%28x%2B3%29%3D7 The answer is C.

  2. sam30317
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I havent done "log" in a looooong time, so sorry i cant help with that part

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

    @sam that should be "2^x *2^3" and not '+'.

  4. sam30317
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right, sorry

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

    np

  6. sam30317
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[2^{x} \times 2^{3} = 7 \]

  7. sam30317
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I GOT IT!! Ok, so: \[2^{x} \times 8 =7\] \[2^{x}= 7/8\] \[x=\log(7/8) \div \log(2) ; x=-0.19\]

  8. 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.