sat suite question viewer
Advanced Math
/ Nonlinear functions
Difficulty: Easy
For the function f defined above, what is the value of 
?
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Explanation
Choice C is correct. The value of is found by evaluating the expression 
when 
. Substituting 2 for x in the given equation yields 
. Simplifying 
in the equation results in 
. Evaluating the right-hand side of the equation yields 
. Therefore, the value of is 18.
Choice A is incorrect and may result from evaluating the expression as 
. Choice B is incorrect and may result from evaluating the expression as 
. Choice D is incorrect and may result from evaluating the expression as 
.