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Exponents - Moderate (for scores from 400 to 600).
    STRATEGY:  Read the question two or three times to be 
                          sure you understand what it says.   

Solve:

      STRATEGY:  Think of possible values and substitute.
                            "Guess and check."
Answer:

     STRATEGY:  Read the question again to be sure 
                          you know what it asks.

     SAT TIP:  This question, like many, leads you to solve
                       for one answer, but it has another step.
  
        If    a  =  2   and  b  =  9,

       Then,  a + b  = 11   and   11 squared  =  121.

       The answer is  121.



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