Answer
See graph, $1.00$ and $23.00$
Work Step by Step
See graph for $y=x^3+19.5x^2 - 1021x + 1000.5$ and we can identify the positive x-intercepts as $x\approx1.00$ and $23.00$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Appendix B - Graphing Utilities - B.3 Using a Graphing Utility to Locate Intercepts and Check for Symmetry - B.3 Assess Your Understanding - Page B6: 11
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