Scientist estimate the rate of a wild beast running at full speed to be 66 feet per second. Write a function rule to describe the relationship between the time, t, and the distance, d, a wildebeest travels when running at full speed.

d = r*T

d = 66 * T.

To write a function rule that describes the relationship between time (t) and the distance (d) a wildebeest travels when running at full speed, we need to use the given information that the rate of the wildebeest is 66 feet per second.

The formula for distance (d) is given by:
d = rt

Where d is the distance, r is the rate, and t is the time.

In this case, we know the rate (r) is 66 feet per second. Therefore, the function rule can be written as:

d = 66t

This means that the distance the wildebeest travels is equal to 66 times the time elapsed in seconds.