Charles has changed a great deal. He has a difficult time remembering things, even simple things like where he is or what year it is. He is having increasing difficulty understanding people or saying things that make sense to others. In addition, he rarely cleans himself anymore and acts in very inappropriate ways around others. Charles is exhibiting many signs of

Alzheimer's disease.

Explanation:

Alzheimer's disease is a disease that destroys memory of an individual, they begin to loose touch on things and people they primarily knew.

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !