Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 12 Sequences and Series - 12.5 Use Recursive Rules with Sequences and Functions - 12.5 Exercises - Problem Solving - Page 832: 47a

Answer

See below

Work Step by Step

A person repeatedly takes 20 milligrams of a prescribed drug every 4 hours; the first dose is 20 milligrams, $a_1=20$ ​ A recursive rule for the amount of the drug in the bloodstream after n doses is $$a_n=0.7a_{n-1}+20$$
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