Answer:
2 ft per second
Step-by-step explanation:
The rate of change can be calculated using the following equation:
Where (x1, y1) and (x2, y2) are the coordinates of two points in the graph.
So, if we replace (x1, y1) by (4, 10) and (x2, y2) by (5, 12), we get that the rate of change is equal to:
So, the rate of change is 2 ft per second.