If the function f(x) = x² - 4, what is f(3)?

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Multiple Choice

If the function f(x) = x² - 4, what is f(3)?

Explanation:
To find \( f(3) \), you start by substituting \( x \) with 3 in the function \( f(x) = x^2 - 4 \). 1. Substitute 3 into the equation: \[ f(3) = 3^2 - 4 \] 2. Calculate \( 3^2 \): \[ 3^2 = 9 \] 3. Now substitute this value back into the equation: \[ f(3) = 9 - 4 \] 4. Finally, perform the subtraction: \[ f(3) = 5 \] Thus, the value of \( f(3) \) is 5. This aligns with the correct answer provided. The function is evaluated correctly by performing the operations in the right order and substituting the value accurately. Other choices do not match the result of the calculations based on the function defined, which further confirms the correctness of the answer.

To find ( f(3) ), you start by substituting ( x ) with 3 in the function ( f(x) = x^2 - 4 ).

  1. Substitute 3 into the equation:

[

f(3) = 3^2 - 4

]

  1. Calculate ( 3^2 ):

[

3^2 = 9

]

  1. Now substitute this value back into the equation:

[

f(3) = 9 - 4

]

  1. Finally, perform the subtraction:

[

f(3) = 5

]

Thus, the value of ( f(3) ) is 5. This aligns with the correct answer provided. The function is evaluated correctly by performing the operations in the right order and substituting the value accurately. Other choices do not match the result of the calculations based on the function defined, which further confirms the correctness of the answer.

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