Answer:
The rate of change is 2.5 km per second.
The rate of change is 150 k per minute.
Explanation:
The table below shows the distance, d of a spaceflight above the earth in time, t.
Time (t) Distance (d)
8 seconds 20 km
34 seconds 85 km
2 minutes 300 km
5 minutes 750 km
From the given table we calculate the distance covered in 1 second.
In 8 second distance covered = 20 km
in 1 second distance covered = 20/8 = 2.5 km
in 1 minute (60 seconds) distance covered = 2.5 × 60 = 150 km
Therefore, statement 1 and 4 are the correct statements.