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anonymous

  • 5 years ago

Can someone please help me solve this: In 1920, the record for a certain race was 46.7 sec. In 1930 it was 46.5 sec. Let R(t)=the record in the race and t=the number of years since 1920. Find a linear function that fits the data(Round to the nearest hundredth)

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  1. anonymous
    • 5 years ago
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    easy cake. change in R(t) for every 10 increments of t is -.2 so -.2/10=-.02 R(t)=-.02t+46.7

  2. anonymous
    • 5 years ago
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    yes this was easy

  3. anonymous
    • 5 years ago
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    ok now i need to know how to figure out the predicted record for 2003

  4. anonymous
    • 5 years ago
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    and 2006

  5. anonymous
    • 5 years ago
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    I think the correct answer would be 45.04 is that right?

  6. anonymous
    • 5 years ago
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    hmmm? sorry was away. 2003-1920=83 2006-1920=86 plug those in to t

  7. anonymous
    • 5 years ago
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    first one's right second one's 44.98

  8. anonymous
    • 5 years ago
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    ok that's what I came up with too

  9. anonymous
    • 5 years ago
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    nice medal me =D

  10. anonymous
    • 5 years ago
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    ok now my next task is to figure out when the recod will be 44.76 sec

  11. anonymous
    • 5 years ago
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    so R(t)=44.76 44.76=-.02t+46.7 solve for t

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