freemantruthshell freemantruthshell Today at 4:44 AM Mathematics Answered A merchant uses the rule: selling price equals cost plus 10% of cost. This is a function. _-_-_Why?_-_-_ _-_-_Why?_-_-_ _-_-_Why?_-_-_ _-_-_Why?_-_-_ _-_-_Why?_-_-_
