Answered: The number of lumens (time rate of flow…

The number of lumens (time rate of flow of light) L from a fluorescent lamp can be approximated by the model L =-0.294x² + 97.744x – 664.875, 20

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter4: Polynomials

Section4.6: Multiplying Polynomials

Problem 1OE

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Question

The number of lumens (time rate of flow of light) L from a fluorescent lamp can be approximated by the model
L =-0.294x² + 97.744x – 664.875,
20 <x< 90
where x is the wattage of the lamp.
Use a graphing utility to select the graph of the function. Use the graph to estimate the wattage necessary to
obtain 2400 lumens.

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