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a.	$f(\frac{1}{2})=6(\frac{1}{6})^{2}-\frac{5}{1/2}+1=-\frac{15}{2}$
b.	$f(-0.3)=6(-0.3)^{2}-\frac{5}{(-0.3)}+1=18.207$
c.	$f(a)=6a^{2}-\frac{5}{a}+1$
d.	$f(x+1)=6(x+1)^{2}-\frac{5}{(x+1)}+1$
e.	$f(x+1)-f(x)=12x+6+\frac{5}{(x+1)x}$

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