The function f is defined by the equation f x = 7 x + 2 . What is the value

Question

The function f is defined by the equation f x = 7 x + 2 . What is the value of f x when x = 4 ?

Accepted Answer

The correct answer is 30 . The value of f x when x = 4 can be found by substituting 4 for x in the given equation f x = 7 x + 2 . This yields f 4 = 7 4 + 2 , or f 4 = 30 . Therefore, when x = 4 , the value of f x is 30 .

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