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Chapter 13 Solutions
Algebra and Trigonometry (MindTap Course List)
- An arithmetic sequence has the first term a1=4 and common difference d=43 .What is the 6thterm?arrow_forwardPollution A chemical plant discharges 2400 tons of pollutants every year into an adjacent lake. Through natural runoff, 70% of the pollutants contained in lake at the beginning of the yare are expelled by the end of the year. (a) Explain why following sequence models the An. of the pollutant in the lake at the end of the nth year that the plant is operating. An=0.30An1+2400 (b) Find the first five terms of the sequence An. (c) Find a formula for An. (d) How much of the pollutant remains in the lake after 6 years? How much will remain after the plant has been operating a long time? (e) Verify to part (d) by graphing An with a graphing calculator for n=1ton=20.arrow_forwardA geometric sequence has the first term a1=3 and common ratio r=12 What is the 8thterm?arrow_forward
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