Mixed costs

remain the same in total at every level of activity.

remain the same per unit at every level of activity.

are costs that vary as activity level changes, but do not stay the same per unit like variable cost.

change with the volume of production.

2.)The relevant range of activity refers to the

geographical areas where the company plans to operate.

levels of activity over which the company expects to operate.

3.)The increased use of automation and less use of the work force in companies has caused a trend towards an increase in

both variable and fixed costs.

fixed costs and a decrease in variable costs.

variable costs and a decrease in fixed costs.

variable costs and no change in fixed costs.

level of activity where all costs are constant.

activity level where all costs are curvilinear.