a scientist records a total of -22.4 millimeters of rainfall during a 4 - week drought. what is the average…

Explanation:

Step1: Recall average - formula

The formula for the average of a set of values is $\text{Average}=\frac{\text{Sum of values}}{\text{Number of values}}$.

Step2: Identify sum and number of values

The sum of rainfall is $- 22.4$ millimeters and the number of weeks (values) is $4$.

Step3: Calculate the average

$\text{Average}=\frac{-22.4}{4}=- 5.6$

Answer:

$-5.6$