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anonymous

  • 5 years ago

An office firm estimates that total savings in dollars by converting to solar heating system will be D (x) = 365 - 73/240 X raised to the power of 3. a) Determine the value of x that would give the maximum savings; and b) Calculate the maximum savings possiblle.

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  1. dumbcow
    • 5 years ago
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    is this correct \[D(x) = 365-(73/240)x ^{3}\]

  2. anonymous
    • 5 years ago
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    yes

  3. dumbcow
    • 5 years ago
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    to maximize D, differentiate and set equal to 0 then solve for x

  4. dumbcow
    • 5 years ago
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    did you figure it out? use power rule to find derivative

  5. anonymous
    • 5 years ago
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    No can you work it out for me. Thanks

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