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iheartfood

  • 2 years ago

question is inside :)

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  1. iheartfood
    • 2 years ago
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    |dw:1353813925701:dw|

  2. iheartfood
    • 2 years ago
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    A. 16 years B. 54 years C. 2.4 years D. 9 years

  3. tkhunny
    • 2 years ago
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    \(0.29\cdot(1.046)^{t} = 0.60\) Solve for 't'. You will need logarithms.

  4. iheartfood
    • 2 years ago
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    how do i do that?

  5. tkhunny
    • 2 years ago
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    Introduce the logarithm \(\log\left(0.29\cdot(1.046)^{t}\right) = \log(0.60)\) Now what?

  6. iheartfood
    • 2 years ago
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    idk.. but i think the answer is A. 16 years.. is that right?

  7. tkhunny
    • 2 years ago
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    "I think the answer is..." is not ever an acceptable response. In mathematics, you must prove it. Use the logarithm rules. There is a reason why we did that massive problem, before. \(\log(0.29) + t\cdot\log(1.046) = \log(0.60)\) You need to see where ALL of this came from.

  8. iheartfood
    • 2 years ago
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    kk so what do i do now then?

  9. tkhunny
    • 2 years ago
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    Solve for 't'. You must be able to do this. This is why we invented notation. It will help you. Use the notation, and proper operations on that notation, to solve for 't'. Let's see what you get.

  10. iheartfood
    • 2 years ago
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    kk thanks!

  11. tkhunny
    • 2 years ago
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    Are you going to show us any work?

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