Automobile Emissions The number of parts per million of
Chapter 2, Problem 2.3.94(choose chapter or problem)
Automobile Emissions The number of parts per million of nitric oxide emissions from a car engine is approximated by the model for where is the air-fuel ratio. (a) Use a graphing utility to graph the model. (b) It is observed from the graph that two air-fuel ratios produce 2400 parts per million of nitric oxide, with one being 15. Use the graph to approximate the second air-fuel ratio. (c) Algebraically approximate the second air-fuel ratio that produces 2400 parts per million of nitric oxide. (Hint: Because you know that an air-fuel ratio of 15 produces the specified nitric oxide emission, you can use synthetic division.)
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