Answer:
81 cubic ft. is the answer.
Answer: All four runners ran .96 seconds
Step-by-step explanation: The total time of the four runners, divided by the amount of runners.
3.86/4= .965
1. 9.5x + 1.5
2. 9x + 36
3. 4.8x + 2
4. 22x + 2
Just draw a graph and plot them on the graph then count how many squares (in short) there is between them.