Evaluate each integral below by interpreting

it in terms of areas bounded by the integrand function.


V = 18\displaystyle {\int_{{{1}}}^{{{8}}}} x- 5 dx =


V = 18\displaystyle {\int_{{{1}}}^{{{8}}}}| x- 5 | dx =

Enter each answer as a whole number or as

a reduced fraction (such as 4/5, 35/4 or 11/2).