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If a function is defined as f(x) = 3x + 2, what is the value of f(4)?

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Question: If a function is defined as f(x) = 3x + 2, what is the value of f(4)?

Options:

  1. 14
  2. 12
  3. 10
  4. 8

Correct Answer: 14

Solution: 

To find f(4), substitute 4 into the function: f(4) = 3(4) + 2 = 12 + 2 = 14.

If a function is defined as f(x) = 3x + 2, what is the value of f(4)?

Practice Questions

Q1
If a function is defined as f(x) = 3x + 2, what is the value of f(4)?
  1. 14
  2. 12
  3. 10
  4. 8

Questions & Step-by-Step Solutions

If a function is defined as f(x) = 3x + 2, what is the value of f(4)?
  • Step 1: Identify the function, which is f(x) = 3x + 2.
  • Step 2: We need to find the value of f(4). This means we will replace x with 4 in the function.
  • Step 3: Substitute 4 into the function: f(4) = 3(4) + 2.
  • Step 4: Calculate 3 times 4, which is 12.
  • Step 5: Add 2 to 12: 12 + 2 = 14.
  • Step 6: Therefore, the value of f(4) is 14.
  • Function Evaluation – Understanding how to substitute a value into a function to find the output.
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