Question the-fu
2.1 Nonlinear Functions - Function composition and evaluation
0:00
The function g is defined by 
. What is the value of 
?
A.
B.
0
C.
4
D.
8
The function g is defined by . What is the value of ?
Medium-difficulty · SAT Math · Nonlinear Functions — Function composition and evaluation. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice D is correct. The value of is found by substituting 0 for x in the function g. This yields 
, which can be rewritten as 
.
Choice A is incorrect and may result from misinterpreting the equation as 
instead of . Choice B is incorrect. This is the value of x, not 
. Choice C is incorrect and may result from calculation errors.
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