008A Sample Final A, Question 2
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Question: Find f(5) for , which is the function from problem 1.
Foundations 

How would you find f(5) if f(x) = 2x + 1 instead? 
Answer: we replace every occurrence of x with a 5. So 

Solution:
Step 1: 

Replace any occurrence of x by 5, so 

Final Answer: 
