Will mark brainliest! No wrong answers ill report get ur acc taken down.

Given the graph below state whether or not the relation is a function, and give the domain and range.

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

Use sigma notation to represent the following series for 9 terms.