The given question is incomplete, here is a complete question.
Grandma Millie is shrinking! Her height decreases by 1/4 cm each year. What is her total change in height over 3 years?
Answer : The total change in her height over 3 years is, 
Explanation :
As we are given that the height of grandma Millie decreases by 1/4 cm each year.
Now we have to determine the total change in her height over 3 years.
As, the height of grandma Millie decreases in 1 year = 
So, the height of grandma Millie decreases in 3 years = 
= 
Thus, the total change in her height over 3 years is, 