Answer:
6.6%
Step-by-step explanation:
Note: I had to correct the given data
Given data
Initial charges= $7.50
Final charges= $8.0
Percent increase
% increase= Final-initial/initia*100
% increase= 8-7.5/7.5*100
% increase= 0.5/7.5*100
% increase= 0.066*100
% increase= 6.6%
