Composition of Functions

Michigan State University - Diagnostic Exam

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3.18

Let $f(x ) = 5x - 1$ and $g(x) = - x2$ . Find $f (g(- 3))$ .

a) 44 b) -256 c) 256 d) -46 e) -25

Solution:

$f(g(-3)) = 5(g(- 3)) - 1 = 5(- 9) - 1 = - 46$

Diagnostic:

If you miss this question please review function composition.

See 3.1: Functions .

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July 15, 2008