Using the activity rates you have computed, determine the total cost and the average cost per thousand square feet of each of the following jobs according to the activity$-$based costing system.

Note: Round the "Average Cost per thousand square feet" to $2$ decimal places.

a$.$ A routine $1,000-$square$-$foot asbestos removal job.

b$.$ A routine $2,000-$square$-$foot asbestos removal job.

c$.$ A nonroutine $2,000-$square$-$foot asbestos removal job.