Ok so i am getting really mad at this assignment who knows how to add the total of expenses on a without actually having to do

This may be able to help, Select the first entry in your income column, press the Shift key, select the last income item in that column, then press the Enter key to calculate your income total. Select an empty cell beneath the last item in your Expenses column. Type Total Expenses in this cell, then press the Enter key. Hope it helped!

You probably find kind your i think