Question

1. having a crew on the international space station requires life support and crew supplies. the graph shows the relationship between the cost of life support and crew supplies, and the number of days spent in space. which costs less, life support or crew supplies? explain your thinking.

Explanation:

The slope of a line in a cost - time graph represents the rate of cost increase per day. A smaller slope means a lower cost per day. Since the line for life support has a smaller slope than the line for crew supplies, life support has a lower cost per day.

Answer:

Life support costs less. Because in the cost - time graph, the slope of the life support line is smaller than that of the crew supplies line, indicating a lower cost per day for life support.