able/fixed costs to changes in activity? What is the 7. What is the reaction of total variable is to changes in activity W .. reaction of unit variable/fixed costs to changes in activity? brus. 2009.MDO - Variable cost F ixed Cost S Total Total mu , # of Units nozivib 10 bolo por Units # of Units Units no # of Units Within the # of Units relevant range 8. What are the differences between manufacturing and merchandising comp are their product costs, period costs, and inventory accounts: een manufacturing and merchandising companies? What