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Algebra Difficulty: Easy

The function $f$ is defined by $f (x) = 25 x + 30$ . What is the value of $f (x)$ when $x equals 2$ ?

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Explanation

Choice C is correct. It’s given that the function $f$ is defined by $f (x) = 25 x + 30$ . Substituting $2$ for $x$ in this equation yields $f (2) = 25 (2) + 30$ , which is equivalent to $f (2) = 50 + 30$ , or $f left parenthesis 2 right parenthesis equals 80$ . Therefore, the value of $f (x)$ is $80$ when $x equals 2$ .

Choice A is incorrect. This is the value of $25 left parenthesis 2 right parenthesis$ , not $25 left parenthesis 2 right parenthesis plus 30$ .

Choice B is incorrect. This is the value of $25 + 2 + 30$ , not $25 left parenthesis 2 right parenthesis plus 30$ .

Choice D is incorrect. This is the value of $left parenthesis 25 plus 30 right parenthesis left parenthesis 2 right parenthesis$ , not $25 left parenthesis 2 right parenthesis plus 30$ .