Can any one help me solve the problem 10 like in the picture ?

10. Classify each cost as: variable, fixed, or mixed. 10,000 Units 20,000 Units Indirect labour $5,000 $10,000 Property taxes $3.000 $3,000 Direct labour $15,000 $30,000 Direct materials $20,000 $40,000 Depreciation $8,000 $8,000 Utilities $2,500 $4,000 Maintenance $6,000 $7,500