sat suite question viewer
Advanced Math
/ Nonlinear functions
Difficulty: Easy
If 
, what is 
?
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Explanation
Choice A is correct. Substituting –1 for x in the equation that defines f gives 
. Simplifying the expressions in the numerator and denominator yields 
, which is equal to 
or –5.
Choices B, C, and D are incorrect and may result from misapplying the order of operations when substituting –1 for x.