Problem: Johnson Company has observed that at an activity level of 5,000 units the cost for maintenance is $6,500 and at 10,000 units the cost for maintenance is $9,000. Using the high-low method, the cost formula for maintenance is:
- $4,000 plus $.50 per unit
- $3,000 plus $.60 per unit
- $.90 per unit
- $1.30 per unit