# Chapter 4 - An Introduction to Functions - 4-6 Formalizing Relations and Functions - Practice and Problem-Solving Exercises: 39

6

#### Work Step by Step

First, we have to find f(5) f(5)=2(5) =10 Then, we find (2)*g(1) (2)*g(1) = 2[$(1)^{2}$+1] =2(1+1) =2(2) =4 10-4=6

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