Linear functions SAT question

Math · Algebra · Easy · Answer it here, explanation included.

The function $g$ is defined by $g (x) = 10 x + 8$ . What is the value of $g (x)$ when $x = 8$ ?

ExplanationShow

Choice D is correct. The value of $g (x)$ when $x = 8$ can be found by substituting $8$ for $x$ in the given equation $g (x) = 10 x + 8$ . This yields $g (8) = 10 (8) + 8$ , or $g (8) = 88$ . Therefore, when $x = 8$ , the value of $g (x)$ is $88$ .

Choice A is incorrect. This is the value of $x$ when $g (x) = 8$ , rather than the value of $g (x)$ when $x = 8$ .

Choice B is incorrect and may result from conceptual or calculation errors.

Choice C is incorrect and may result from conceptual or calculation errors.

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