Concept explainers
Stopping Distance (Refer to Example 1.) If a driver attempts to stop while traveling at
x miles per hour on dry, level pavement, the reaction distance is r(x) =
(a) Write a formula for a function s in terms of r(x) and b(x) that gives the stopping distance when driving at x miles per hour. Evaluate s(55).
(b) Graph r, b, and s on the same axes. Explain how the graph of s can be found using the graphs of r and b.
(c) Make tables for r(x) and b(x) at x = 11, 22, 33, 44, and 55. Then use these tables to construct a table for s(x).
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College Algebra with Modeling & Visualization (6th Edition)
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