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anonymous

  • 5 years ago

The equation, y = 12841(1.01)x , represents the average cost of an education at a private college, after 1990. What is the average cost in 1990 (x = 0)? A. $12,969 B. $12,841 C. $13,122 D. $13,099 Wouldnt the answer be A? (:

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  1. anonymous
    • 5 years ago
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    12841

  2. anonymous
    • 5 years ago
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    assuming this is \[12841(10.1)^x\]

  3. anonymous
    • 5 years ago
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    i mean \[12841(1.01)^x\]

  4. anonymous
    • 5 years ago
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    No, its 1.01

  5. anonymous
    • 5 years ago
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    ya lol

  6. anonymous
    • 5 years ago
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    \[(1.01)^0=1\] so you just get the number in front

  7. anonymous
    • 5 years ago
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    Right.

  8. anonymous
    • 5 years ago
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    Which is what i did then i multiplied and got 12969.41 .... i must have mis calculated hold on i will try again

  9. anonymous
    • 5 years ago
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    hold on multiplied by what? 1 times any number is just that number.

  10. anonymous
    • 5 years ago
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    but isnt it 1.01 not 1?

  11. anonymous
    • 5 years ago
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    oh no. anything to the power of zero is 1

  12. anonymous
    • 5 years ago
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    you have \[12841(1.01)^x\] i am fairly sure the x is in the exponent. this is growth of 1% per year. when you replace x by 0 you get what you started with, which is the number out front, because \[(1.01)^0=1\]

  13. anonymous
    • 5 years ago
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    Ahhh i see now (: Thank you!!!

  14. anonymous
    • 5 years ago
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    welcome

  15. myininaya
    • 5 years ago
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    hey poplak come look at the cool problem i did :)

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