Answer:
Explanation:
You can read the answers right off the graph.
a) When t=5: Find 5 on the x-axis (time (h)), go straight up vertically until you hit the line, then go straight to the left horizontally until you hit the y-axis (distance (km)); at that point d ≈ 14 km
b) When d=20: Find 20 on the y-axis (distance (km)), go straight to the right horizontally until you hit the line, then go straight down vertically until you hit the x-axis (time (h)); at that point t ≈ 7 hr