The graphs on page 99 represent cost behavior patterns that might occur in a company'scost structure. The vertical axis represents total cost and the horizontal axis represents activity output.

Required:

For each of the following situations, choose the graph from the group a-1 that best illustrates the cost pattern involved. Also, for each situation, identify the driver that measures activity output.

1. The cost of power when a fixed fee of $500 per month is charged plus an additional charge of $0.12 per kilowatt hour used.

2. Commissions paid to sales representatives. Commissions are paid at the rate of 5 per¬

cent of sales made up to total annual sales of $500,000, and 7 percent of sales above

$500,000.

3. A part purchased from an outside supplier costs $12 per part for the first 3,000 parts and $10 per part for all parts purchased in excess of 3,000 units.

4. The cost of surgical gloves, which are purchased in increments of 100 units (gloves come in boxes of 100 pairs).

5. The cost of tuition at a local college that charges $250 per credit hour up to fifteen credit hours. Hours taken in excess of fifteen are free.
6. The cost of tuition at another college that charges $4,500 per semester for any course load ranging from twelve to sixteen credit hours. Students taking fewer than twelve credit hours are charged $375 per credit hour.'Students taking more than sixteen credit hours are charged $4,500 plus $300 per credit hour in excess of sixteen.
7. A beauty shop's purchase of soaking solution to remove artificial nails. Each jar of so¬
lution can soak off approximately fifty nails before losing effectiveness.
8. Purchase of diagnostics equipment by a company for inspection of incoming orders.
9. Use of disposable gowns by patients in a hospital.
10. Cost of labor at a local fast-food restaurant. Three employees are always on duty dur¬
ing working hours; more employees can be called in during periods of heavy demand to work on an "as-needed" basis.
11. A manufacturer found that the maintenance cosfof its heavy machinery was tied to the age of the equipment. Experience indicated that the maintenance cost increased at an increasing rate as the equipment aged.

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a. b. C. d. i. e. h.