For the 1 first problem you have to do additive inverse where the subtraction sign is and then combine all the z's and then combine the normal numbers and then put plus sign in between
Given that the mean GPA for 115 residence of the local apartment complex is:
So, let’s evaluate the correct ones. 11 x 3 = 33. Now for the incorrect. 0.75 x 4 = 1.
33 + 1 = 34
So her score in total is 34 points. Hope this helped! :D