The expression for the amount of blood donated by the volunteers is 470 (32 - n), milliliters.
How to write the expression for the amount of blood denoted?
The number of milliliters donated by the volunteers is calculated by applying the following formula as shown below.
The given parameters include;
total number of volunteers = 32
number of volunteers that couldn't donate blood = n
amount of blood donated by each volunteer = 470 milliliters
The number of volunteers that donated blood is calculated as;
= 32 - n
If each person donated 470 milliliter, the total volume of blood donated by the volunteers is calculated as;
= 470 (32 - n)
So the expression for the amount of blood donated by the volunteers is 470 (32 - n) milliliters.