Box 8–5 Water Business Problem
The Turtle Mountain Springs Company made plans for growth in its share of the water business. They predicted that annual income from the sale of its bottled water B and filters F would change over time according to the following formulas. Time, t, is in years since 1990, and income is in millions of dollars per year.
Bottled Water Income: B=20+5t
Filtering Devices Income: F=28+3t
Question: When does the Turtle Mountain Springs Company expect the two water products to give the same annual income?
SOURCE: Huntley, Rasmussen, Villarubi, Sangtong, and Fey, 2000, p. 347. Used by permission of the author.