Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 3 - Section 3.2 - Introduction to Functions - Exercise Set: 116

Answer

$a. 11$ $b. 2a + 7$ $c. -2x + 7$ $d. 2x + 2h + 7$

Work Step by Step

$f(x) = 2x + 7$ $a. f(2)$ $f(2) = 2(2) + 7$ $f(2) = 4 + 7$ $f(2) = 11$ $b. f(a)$ $f(a) = 2(a) + 7$ $f(a) = 2a + 7$ $c. f(-x)$ $f(-x) = 2(-x) + 7$ $f(-x) = -2x + 7$ $d. f(x + h)$ $f(x + h) = 2(x + h) + 7$ $f(x + h) = 2x + 2h + 7$
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