Function Evaluation: Finding f(4)

Easy Functions And Modeling Function Notation And Interpretation

Consider the function defined by the equation $$f(x) = 2x + 3$$. If you want to find the value of this function at $$x = 4$$, what is the correct calculation?

$$f(4) = 8 + 3 = 11$$

$$f(4) = 2(4) + 3 = 11$$

$$f(4) = 4 + 3 = 7$$

$$f(4) = 2 + 3 = 5$$

Hint

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