The function g is defined by g ( x ) = | x + 18 | . What is the

Question

The function g is defined by g ( x ) = | x + 18 | . What is the value of g 4 ?

Accepted Answer

Choice D is correct. The value of g 4 is the value of g x when x = 4 . Substituting 4 for x in the given equation yields g 4 = 4 + 18 , which is equivalent to g 4 = 22 , or g 4 = 22 . Therefore, the value of g 4 is 22 . Choice A is incorrect. This would be the value of g 4 if function g was defined by g x = - 18 , not g x = x + 18 . Choice B is incorrect. This would be the value of g 4 if function g was defined by g x = - x , not g x = x + 18 . Choice C is incorrect. This would be the value of g 4 if function g was defined by g x = - x + 18 , not g x = x + 18 .

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