72 is the difference of Chrissy’s height and 9 use the variable c to represent Chrissy’s height

To represent Chrissy's height using the variable c, we can write the equation:

c - 9 = 72

To solve for c, we need to isolate the variable on one side of the equation. We can do this by adding 9 to both sides of the equation:

c - 9 + 9 = 72 + 9
c = 81

Therefore, Chrissy's height, represented by the variable c, is 81.