Mary, Jill, and Jim have 91 apples. Jill has twice as many as Mary. Tim has 7 more than Mary. How many do they each have?
1 answer:
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The answer is: 41.256 (You round it to the number that you're required to round it)
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Let , so that differentiating both sides wrt
gives
If and
, the above reduces to
This is the slope of the tangent line, which has equation
