! Required information [The following information applies to the questions displayed below.] Martinez Company's relevant range of production is 8,500 units to 13,500 units. When it produces and sells 11,000 units, its unit costs are as follows: Amount Per Unit Direct materials $6.70 Direct labour $4.20 Variable manufacturing overhead $1.40 Fixed manufacturing overhead $4.70 Fixed selling expense $3.70 Fixed administrative expense $2.10 Sales commissions $1.10 Variable administrative expense $0.55 11-a. If 9,000 units are produced, what is the total amount of manufacturing overhead cost incurred to support this level of production?