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(1 point) The graph of f(x) = 2x + 15x 84x + 20 has two horizontal tangents. One occurs at a negative value of
(1 point) The graph of f(x) = 2x + 15x 84x + 20 has two horizontal tangents. One occurs at a negative value of x and the other at a positive value of x. What is the negative value of x where a horizontal tangent occurs? What is the positive value of x where a horizontal tangent occurs?
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College Algebra Graphs and Models
Authors: Marvin L. Bittinger, Judith A. Beecher, David J. Ellenbogen, Judith A. Penna
5th edition
321845404, 978-0321791009, 321791002, 978-0321783950, 321783956, 978-0321845405
