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If f(x) = 2^x, what is f(3)?

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Question: If f(x) = 2^x, what is f(3)?

Options:

  1. 6
  2. 8
  3. 9
  4. 10

Correct Answer: 8

Solution: 

f(3) = 2^3 = 8.

If f(x) = 2^x, what is f(3)?

Practice Questions

Q1
If f(x) = 2^x, what is f(3)?
  1. 6
  2. 8
  3. 9
  4. 10

Questions & Step-by-Step Solutions

If f(x) = 2^x, what is f(3)?
  • Step 1: Identify the function f(x) which is given as f(x) = 2^x.
  • Step 2: Substitute the value of x with 3 in the function. So, we need to find f(3).
  • Step 3: Replace x in the function with 3. This gives us f(3) = 2^3.
  • Step 4: Calculate 2^3. This means 2 multiplied by itself 3 times: 2 * 2 * 2.
  • Step 5: Perform the multiplication: 2 * 2 = 4, and then 4 * 2 = 8.
  • Step 6: Conclude that f(3) = 8.
  • Exponential Functions – Understanding how to evaluate exponential functions at specific values.
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