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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter2: Linear Equations
Section2.1: Writing Equations
Problem 13CYU
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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.
Transcribed Image Text: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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