Create an m$-$file called helloworld.m that displays the phrase $$Hello World!$$ when invoked. Test it by running the m$-$file in the Command Window.

Create an m$-$file called firstNine.m to display the integers from $1$ to $9.$

Create an m$-$file called firstNineSquares.m to display squares of the integers from $1$ to $9.$

Create an m$-$file called askName.m that asks the User for their last name and stores it in a variable called lastName. After storing their last name, display a message that reflects their last name back to them in some way. Test it by running the m$-$file in the Command Window.

Create an m$-$file called threeAverage.m to calculate the average of three numbers entered by the User, and display the result.

Create an m$-$file called userRadius.m to prompt the User for a radius of a circle. Display the perimeter and the area of the circle

Write a brief description of why decomposition and design are essential in real$-$world programming.

Write a brief description of why comments and documentation is essential in real$-$world programming.