How to solve the $x$ using the table below if the

answer is $\frac{8}{8}=1$ in slab design

$408\mathrm{.}10\mathrm{.}5\mathrm{.}1$ The column strip shall resist the portion of

interior negative $M_u$ in accordance with Table $408\mathrm{.}10\mathrm{.}5\mathrm{.}1.$

Table $408\mathrm{.}10\mathrm{.}5\mathrm{.}1$

Portion of Interior Negative $M_u$ in Column Strip

Note: Linear interpolations shall be made between values shown