8. At DuLarge Marine manufacturing the machine has broken down over the past 30 weeks, as indicated below. Each time the machine breaks down, the firm loses an average of $3,000 in time and repair expenses. If preventive maintenance were implemented, it is estimated that an average of only one breakdown per week would occur. The cost of preventive maintenance is $1,000 per week.

Number of breakdowns per week	0	1	2	3	4
Frequency (Number of weeks that breakdowns occurred)	8	3	5	9	5

What is the weekly total maintenance cost of this program?

1. $1,000
2. $6,000
3. $4,000
4. $8,000
5. $3,000