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icalibear

  • 2 years ago

Did I do this right? Please check my work, somebody? On January 1, 2010, Chessville has a population of 50,000 people. Chessville then enter a period of population growth. Its population increases 7% each year. On the same day, Checkersville has a population of 70,000 people. Checkersville starts to experience a population decline. Its population decreases 4% each year. During what year will the population of Chessville first exceed that of Checkersville? Please show your work and explain your steps in the simplest way possible. :)

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  1. omgitsjc
    • 2 years ago
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    (50K)(.07)=3500 (70K)(.04)=2800 in y1 of you enter 50000 + 3500x and y2 you enter 70000 - 2800x...go to the table and you will see that they equal after about 3 years

  2. omgitsjc
    • 2 years ago
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    first you want to convert the percentages to decimals

  3. omgitsjc
    • 2 years ago
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    so you divide 7 by 100 and 4 by 100

  4. omgitsjc
    • 2 years ago
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    7/100= .07 4/100= .04

  5. omgitsjc
    • 2 years ago
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    then you want to multiply 50,000 by .07 and 70,000 by .04

  6. omgitsjc
    • 2 years ago
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    50,000 times .07=3500 70,000 times .04= 2800

  7. omgitsjc
    • 2 years ago
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    50,000 times .07=3500 70,000 times .04= 2800

  8. icalibear
    • 2 years ago
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    thanks

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