$3\mathrm{.}15$ Write MATLAB functions to perform the following unit conversions, taking a value in SI units as the input argument and returning the value converted to U$.$S$.$ Customary units:

a$.$ Centimeters to inches

b$.C$ to $F$

c$.$ Newtons to pounds

d$.$ Meters per second to miles per hour

e$.$ Kilograms to slugs

Use comments in your function to cite the reference used to determine the unit conversion values.