sat suite question viewer
Algebra
/ Linear functions
Difficulty: Easy
The function is defined by . What is the value of ?
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Explanation
Choice A is correct. The value of can be found by substituting for in the equation defining . Substituting for in yields , or . Therefore, the value of is .
Choice B is incorrect. This is the value of , not .
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect and may result from conceptual or calculation errors.