Hello! The following problems should be completed using the MATLAB programming software and answers should be given in MATLAB code. Thank you!

Problem $9$: Create a linear spline of the following drug release data:

Predict drug concentrations at $\backslash (\backslash$mathrm$\{$t$\}=(1\mathrm{.}5,6,18,60)\backslash ).$ Plot all results on a single graph with the original data. Return outputs as a vector $\backslash ($ C $\backslash ).$

Problem $10$: Using the spline command, predict drug concentrations as in Problem $9$ using a cubic spline. Return outputs as a vector $\backslash (\backslash$mathbf$\{$C$\}\backslash ).$