using matlab

Problem 3 (25%) Determine how many months are needed to accumulate $4,000. Consider an initial deposit of $800 the first month, and then a deposit of $300 at the beginning of each month, given that the bank has a 0.4% monthly interest. Display the amount accumulated at the end of each month (use while command) Problem 4 (25%) Create the following piece-wise function using both anonymous function and a primary function (function in file using same script). Plot them using commandsubplot 211. Include axis labels, and grid: f(x)=6* *5-10rx>1 -15x31 Plot the figure for x ranging from -2 to 2, in steps of 0.02. Include axis labels, and grid