P$7-6,$ The reaction

$AB+C$

was carried out in a constant$-$volume batch reactor where the following concentration measurements were recorded as a function of time.

$\backslash$table$[[t(min),0,5,9,15,22,30,40,60],[C_A(mo\frac{l}{d}{m}^3),2,1\mathrm{.}6,1\mathrm{.}35,1\mathrm{.}1,0\mathrm{.}87,0\mathrm{.}70,0\mathrm{.}53,0\mathrm{.}35]]$

$($a$)$ Use nonlinear least squares $($i$.$e$.,$ regression$)$ and one other method to determine the reaction order, $,$ and the specific reaction rate, $k.$