$(0\mathrm{.}5$: $10\%)$

Where $C$ is the last $2$ integers of your student number.

Find the least squares parabolic fit: $y=A_1{x}^2+B_{1}x+C_1,$

Find the curve fit $y=C_1{x}^A$ by using the change of variables to linearize the given

data points.

For each of the above cases, calculate the coefficient of determination $r^2$ and plot the

data and the regression curves. Discuss your results.

Check the results of the parts $19,20,$ and $21$ using the Maple$/$Python software.