A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

the cancer death rate 100,000 people in the United States can be aproximated by the equation y=-2.2x+216, where x is the number of year since 1990. use this equation to determine in whixh year the approximate cancer death rate will be 150? how can i get this answer?

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

    y = 150 (target number of deaths) 150 = -2.2 x (year-1990) +216 Subtract 216 from each side -66 = -2.2 x (year -1990) divide both sides by -2.2 30 = year-1990 Add 1990 to each side 2020 = year So in 2020 the cancer deaths will be 150 per year.

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

    i reallu need help trying to find the answer

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

    y = -2.2x + 216 --> 2.2x = 216 - y --> x = (216 - y) / 2.2 substituting y = 150 --> x = 66 /2.2 = 30 so in year 2020 (1990 +30) cancer death rate will be 150.

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

    thank you

  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

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.