Boulevard Company's average cost per unit is $1.425 at the 16,000-unit level of activity and $1.38 at the 20,000-unit level of activity.Note: you need to calculate a total cost

Assume that all of the activity levels mentioned in this problem are within the relevant range.

Predict the following items for Boulevard Company:

a) Variable cost per unit.

b) Total fixed cost per period.

c) Total expected costs at the 18,000-unit level of activity.