The mean is when you add all of the numbers up then divide by how many there are. So in that case, You would add all of the bottom numbers up and then divide them by how many there are.
So on the next question, when you find out the mean, just see what numbers are bigger than that and you will get it!
For the last one, just add 45 to the other numbers that you added together then divide like you did with the mean- how ever many numbers there are, you would divide by that much!
Hope this helps!
