# Chapter 1 - Section 1.7 - Combinations of Functions; Composite Functions - Exercise Set: 2

$(-\infty, +\infty)$

#### Work Step by Step

Simplify the right side to obtain: $f(x) = 2(x) + 2(5) \\f(x) =2x+10$ This function is defined for all real number values of $x$, therefore its domain is the set of all real numbers. Thus, the domain is $(-\infty, +\infty)$.

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