[tex]3.75 - ( - \frac{1}{6} ) - ( - \frac{1}{6} ) + {0.5}^{2} = \frac{15}{4} + \frac{1}{6} + \frac{1}{6} + ( \frac{1}{2}^{2} ) = \frac{15}{4} + \frac{1}{6} + \frac{1}{6} + \frac{1}{4} = \frac{13}{3} [/tex]