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anonymous

  • one year ago

The temperature of a chemical reaction ranges between 20°C and 160°C. The temperature is at its lowest point when t = 0, and the reaction completes one cycle over an eight-hour period. What is a cosine function that would model this reaction?

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  1. anonymous
    • one year ago
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    A. f(t) = -90 cos pi over 4t + 70 B. f(t) = -70 cos pi over 4t + 90 C. f(t) = 70 cos 8t + 90 D. f(t) = 90 cos 8t + 70

  2. anonymous
    • one year ago
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    I'm thinking it's C because I believe that the constant is 70?

  3. anonymous
    • one year ago
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    @ParthKohli @wade123

  4. anonymous
    • one year ago
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    @zoomiemoo

  5. anonymous
    • one year ago
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    Okay it wasn't C

  6. anonymous
    • one year ago
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    sorry @twinkle12377 Im not very good as trig I am better with algebra

  7. anonymous
    • one year ago
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    I can usually help with calculus as well

  8. anonymous
    • one year ago
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    personally I would graph the functions and choose the one the is 20 at 0 and 160 at 8

  9. anonymous
    • one year ago
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    ohhh okay thank you so much! :) @zoomiemoo

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