Ji Hee is trying to find the area $\int _ { - 1 } ^ { 5 } g ( m ) d m$. She already knows that:

$\int _ { 0 } ^ { x } g ( m ) d m = \frac { 4 x + 1 } { x + 2 }$.

Help her find:

3. $\int _ { - 1 } ^ { 5 } g ( m ) d m$

   Hint (c):

   See parts (a) and (b).