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The line that models the data is given by the equation where represents the wait time, and represents the number of sta available.
a. The slope of the line is -1.62. What does this mean in this situation? Is it realistic? b. The -intercept is . What does this mean in this situation? Is it realistic?
Solution
a. Sample response: Each additional sta member available decreases wait time by about 1.62 minutes. This is probably realistic since more sta means more people available to help customers, so the wait time will decrease and about 2 minutes per additional person seems reasonable.
b. Sample response: This means that when 0 sta is available, the wait time is 18 minutes. This is unrealistic since a person would wait forever if no sta were there to serve them.
Problem Statement
A seed is planted in a glass pot and its height is measured in centimeters every day.
Unit 3
Lesson 4 Practice Problems 63