Answer
See below.
Work Step by Step
Using the ZERO function of a graphing utility to get the positive x-intercepts we get: $ZERO(x^3 + 14.2x^2 - 4.8x - 12.4)=1.07184\approx1.07$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Appendix - Graphing Utilities - 3 Using a Graphing Utility to Locate Intercepts and Check for Symmetry - 3 Exercises - Page A6: 12
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