Asked by Hannah
The cost of purchasing x meter lengths of a certain rope is:
C=1/5x^2-8x+100 per rope.
What is the length of the cheapest rope that can be purchased?
C=1/5x^2-8x+100 per rope.
What is the length of the cheapest rope that can be purchased?
Answers
Answered by
Steve
minimum cost is at the vertex of the parabola, which occurs at x = 8/(2/5) = 20
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