Situation 1: a pair of shoes is on sale for 80% of the original price. the sale price is 60$. what was the original price

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

What is the inverse of the function f(x)=4x+8

What is the upper quartile in the box plot?