Given: f(a) = 2 g(a): 3ª 4(a + 8) Susan tried to evaluate (fog)(-15), but she made a mistake. Here is her work. Step 1 Step 2 g(-15) (-15) f(-15) Step 3 (fog)(-15) Choose 1 answer: = -10 = -4(-15+8) = 28 = 28.-10 = -280 What is the mistake in Susan's work? f(-15) 68, not 28. = (fog)(-15)= f(g(-15)), not f(-15) · g(-15). (fog)(-15) = g(f(-15)), not f(-15). g(-15).

Given: f(a) = 2 g(a): 3ª 4(a + 8) Susan tried to evaluate (fog)(-15), but she made a mistake. Here is her work. Step 1 Step 2 g(-15) (-15) f(-15) Step 3 (fog)(-15) Choose 1 answer: = -10 = -4(-15+8) = 28 = 28.-10 = -280 What is the mistake in Susan's work? f(-15) 68, not 28. = (fog)(-15)= f(g(-15)), not f(-15) · g(-15). (fog)(-15) = g(f(-15)), not f(-15). g(-15).

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter9: Sequences, Probability And Counting Theory

Section9.5: Counting Principles

Problem 17SE: For the following exercises, compute the value of the expression. 17. P(3,3)

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