Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.3 - More on Functions and Their Graphs - Exercise Set - Page 199: 104

Answer

The domain is\[\left( 25,75 \right)\]and the range is\[\left( 23,26 \right)\].

Work Step by Step

From the given graph we can observe that at the age of 25, the percent body fat in men is 23. Then it starts increasing until it reaches the value of 26 at the age of 65. Thus, with the help of the graph we can observe that the percent body fat in men increases in the interval $\left( 25,65 \right)$. At 65 years of age, the percent body fat in men is 26. It then starts decreasing until it reaches 25 at the age of 75. So, the domain and the range for the graph of function for men is $\left( 25,75 \right)$ and $\left( 23,26 \right)$.
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