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anonymous

  • 5 years ago

Please Please Help. This is due monday and I have no idea how to do it. I need more than just answers, I need to see how to work it. Thanks, Tiff Carbon dioxide CO2 is a greenhouse gas in the atmosphere that may raise average temperatures on Earth. The burning fossil fuels could be responsible for the increased levels of carbon dioxide. If current trends continue, future concentrations of atmospheric carbon dioxide in parts per million (ppm) could reach levels shown in the accompanying table. The CO2 concentration in the year 2000 was greater than it had been in 160,000 years. Year 2000

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  1. anonymous
    • 5 years ago
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    A lot of words, no question.

  2. anonymous
    • 5 years ago
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    The rest of it didn't show up. Hold on

  3. anonymous
    • 5 years ago
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    Year 2000 2050 2100 2150 2200 ppm 364 467 600 769 987 a) Let x be in years, where x=0 corresponds to 2000, x=1 to 2001 and so on. Find the values for C and a so that f(x)=Ca^x models the data. b) Graph f and the data in the same viewing rectangle. c) Use f(x) to estimate graphically the year when the Carbon dioxide Concentration will be double the preindustrial level of 280 ppm.

  4. anonymous
    • 5 years ago
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    is the question complete?

  5. anonymous
    • 5 years ago
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    Its a through c. That is it.

  6. anonymous
    • 5 years ago
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    Start off by making a graph, where x, put the years 2000 at x=0, 2001 at x=1 etc

  7. anonymous
    • 5 years ago
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    Ok I can do that.

  8. anonymous
    • 5 years ago
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    The y or f(x) is ppm

  9. anonymous
    • 5 years ago
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    What type of graph do I make?

  10. anonymous
    • 5 years ago
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    do you have a graphing calculator?

  11. anonymous
    • 5 years ago
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    No but I have the graph done. I just did a line graph.

  12. anonymous
    • 5 years ago
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    What next.

  13. anonymous
    • 5 years ago
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    Does your graph look like a like a "J"?

  14. anonymous
    • 5 years ago
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    Draw a rough graph as we speak, do you have your graph?

  15. anonymous
    • 5 years ago
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    Yes

  16. anonymous
    • 5 years ago
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    Make a dot at 364-2000

  17. anonymous
    • 5 years ago
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    I have plotted everything in the table..

  18. anonymous
    • 5 years ago
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    Is that right?

  19. anonymous
    • 5 years ago
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    Then draw the line, you are one third complete. Why are you stressing?

  20. anonymous
    • 5 years ago
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    Part a) and c) that is what I'm stressing about. LOL

  21. anonymous
    • 5 years ago
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    I drew the line.

  22. anonymous
    • 5 years ago
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    As I'm reading this, they want you to do it in a calculator, you must have had some practice inputting in calculator.

  23. anonymous
    • 5 years ago
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    I have to show all my work for part a) and c) and I don't get part a) at all.

  24. anonymous
    • 5 years ago
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    Did you have practise inputting in calculator?

  25. anonymous
    • 5 years ago
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    Sure I have before. I already took my test and did great on it. So I don't know what my deal is.

  26. anonymous
    • 5 years ago
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    So set up the tables in a calculator.

  27. anonymous
    • 5 years ago
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    c) is just asking you to look at the x value of your calculator and tell what year the ppms would hit 560

  28. anonymous
    • 5 years ago
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    I don't have a graph caculator.

  29. anonymous
    • 5 years ago
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    \[f(x)=560^{x}\]You can look at your tables and guess what year 560 is hovering over. For a more accurate answer solve for x algebraically.

  30. anonymous
    • 5 years ago
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    I got it finished. Thank you for your help. :)

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