Lumens The number of lumens (time rate of flow of light)
Chapter , Problem 2.3.87(choose chapter or problem)
Lumens The number of lumens (time rate of flow of light) from a fluorescent lamp can be approximated by the model where is the wattage of the lamp. (a) Use a graphing utility to graph the function. (b) Use the graph from part (a) to estimate the wattage necessary to obtain 2000 lumens.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer