$2.50 for 5 oz is the same as 2.50/5 as a unit rate. Unit rate: a rate comparing 2 different things, denominator as 1. So divide 2.50/5 by 5 in the top and bottom. You will get 0.50/1 Therefore, it is 50 cents for 1 oz. Give 5 stars and brainliest answer if this helped please!