Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Section 10.1 - Radical Expressions and Radical Functions - Practice - Page 684: 34

Answer

$ \sqrt[3] x + 2$ has a y-intercept at (0,2), and an x-intercept at (-8,0). It's domain is all real numbers, and it's range is all real numbers.

Work Step by Step

To get the y-intercept, we set $x=0$, and solve: $\sqrt[3] 0 + 2 = 2$ To get the x-intercept, we set $y=0$, and solve: $0 = \sqrt[3] x + 2$ $-2 = \sqrt[3] x$ $(-2)^{3} = x$ $x=-8$ The equation is solvable for all real numbers, so has a domain of all real numbers, and it's range increases to infinity as x gets larger, and decreases to negative infinity as x gets smaller, so has a range of all real numbers.
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