Question

the graph represents a mechanics labor costs for a given number of hours of car repair.
car repairs
which statement describes the relationship between labor cost and time for a car repair?
all repairs requiring 1 hour or less have the same labor cost.
labor costs the same no matter how many hours are used for a repair.
labor costs for a repair are less expensive as the number of hours increases.
there is no cost of labor for a repair requiring less than 1 hour.

Explanation:

1. Analyze the first option: The graph shows that for labor time from 0 to 1 hour, the labor cost is constant at $50. So repairs taking 1 hour or less (i.e., 0 - 1 hour) have the same labor cost.
2. Analyze the second option: After 1 hour, the cost increases with time, so labor cost is not the same for all hours. Eliminate this.
3. Analyze the third option: After 1 hour, as time increases, cost increases (the line has a positive slope), so labor cost is more expensive with more hours. Eliminate this.
4. Analyze the fourth option: For time less than 1 hour, the cost is $50, not zero. Eliminate this.

Answer:

A. All repairs requiring 1 hour or less have the same labor cost.