Please solve using matlab and share the code

Only solve Problem 15.4 (problem 15.3 is only there for reference)

Problem 15.4 Develop an M-file to implement polynomial regression. Pass the M-file two vectors holding the x and y values along with the desired order m. Test it by solving Prob. 15.3. Problem 15.3 Fit a cubic polynomial to the following data: X y 3 1.6 4 3.6 5 4.4 7 3.4 8 2.2 9 2. 11 .8 12 4.6 8 3 Along with the coefficients, determiner and su