Evaluating a Function

                   x² + 12     
Let f(x) = ---------- , What is the value of f(10)?
                    x - 6

A.)  112
B.)  28
C.)  12
D.)  10
E.)  8

---

               10² + 12
f(10) = ------------   {substituted 10 for x}
                10 - 6

     100 + 12
= ------------   {evaluated exponent in numerator and subtracted in denominator}
          4

         112
= -------------   {added in numerator}
          4

= 28   {divided}

B.)  28

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