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6 An advertisement bulletin board store has 1750 light bulbs. Each year, about 1/6 of them burn out. The number of bulbs, B, still lit after n years can be modelled by the equation B= 1750 (5/6) " a) Explain the formula. b) Estimate the number of bulbs still lit after: i) 7 years ii) 13 years

6 An advertisement bulletin board store has 1750 light bulbs. Each year, about 1/6 of them burn out. The number of bulbs, B, still lit after n years can be modelled by the equation B= 1750 (5/6) " a) Explain the formula. b) Estimate the number of bulbs still lit after: i) 7 years ii) 13 years

Advanced Engineering Mathematics
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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6 An advertisement bulletin board store has 1750 light bulbs. Each year, about 1/6 of them burn out. The number of bulbs, B, still lit after n years can be modelled by the equation B= 1750 (5/6) a) Explain the formula. b) Estimate the number of bulbs still lit after: i) 7 years ii) 13 years
Transcribed Image Text:6 An advertisement bulletin board store has 1750 light bulbs. Each year, about 1/6 of them burn out. The number of bulbs, B, still lit after n years can be modelled by the equation B= 1750 (5/6) a) Explain the formula. b) Estimate the number of bulbs still lit after: i) 7 years ii) 13 years
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