Evaluate the definite integrals using properties of the definite integral and the fact that

${\displaystyle \underset{-3}{\overset{2}{}}}f(x)dx=-2,{\displaystyle \underset{2}{\overset{6}{}}}f(x)dx=11,$ and ${\displaystyle \underset{2}{\overset{6}{}}}g(x)dx=6$

$($a$){\displaystyle \underset{-3}{\overset{2}{}}}8f(x)dx=$

$($b$){\displaystyle \underset{-3}{\overset{6}{}}}f(x)dx=$

$($c$){\displaystyle \underset{2}{\overset{6}{}}}(f(x)-g(x))dx=$

$($d$){\displaystyle \underset{2}{\overset{6}{}}}(5f(x)+6g(x))dx=$