Match the items on the bottoms to the ones on top $1.$ A cost that varies with changes in activity

$2.$A cost that remains constant in total with changes in activity

$3.$The range of activity for which the cost behavior patterns are liely to be accurate

$4.$A method of cost analysis that uses a series of mathematical equations to estimate fixed and variable costs

$5.$Sales revenue minus variable costs

$6.$Method of process costing that includes cost in beginning inventory and current period costs to establish and average cost per unit

$7.$Units in beginning work in process $+$ Units started

$8.$Units completed $+$ units in ending work in process

$9.$Costs in beginning WIP inventory $+$ current costs incurred

$10.$Costs assigned to completed units $+$ costs assigned to ending WIP inventory

A$)$ Regression analysis B$)$ Variable cost C$)$ fixed cost D$)$Relevant range E$)$Contribution margin F$)$Total units accounted for G$)$ Weighted average method H$)$total units to account for I$)$total costs accounted for J$)$total costs to be accounted for