An incandescent light bulb costs $0.65 to buy and $0.008/h for electricity to run. A fluorescent bulb costs $3.50 to buy and $0.003 /h to run. a) Use function notation to write a cost equation for each type of bulb. b) State the domain and range of each function. c) After how long is the fluorescent bulb cheaper than the regular bulb? Determine the difference in costs after one year. Assume the light is on for an average of 6 h/day. 1 year = 365 days d) e) Draw and label the graphs of the equations needed.
An incandescent light bulb costs $0.65 to buy and $0.008/h for electricity to run. A fluorescent bulb costs $3.50 to buy and $0.003 /h to run. a) Use function notation to write a cost equation for each type of bulb. b) State the domain and range of each function. c) After how long is the fluorescent bulb cheaper than the regular bulb? Determine the difference in costs after one year. Assume the light is on for an average of 6 h/day. 1 year = 365 days d) e) Draw and label the graphs of the equations needed.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:An incandescent light bulb costs $0.65 to buy and $0.008/h for electricity to
run. A fluorescent bulb costs $3.50 to buy and $0.003 /h to run.
a) Use function notation to write a cost equation for each type of bulb.
b) State the domain and range of each function.
c) After how long is the fluorescent bulb cheaper than the regular bulb?
d) Determine the difference in costs after one year. Assume the light is on
for an average of 6 h/day. 1 year = 365 days
e) Draw and label the graphs of the equations needed.
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