Answer:
-19
Step-by-step explanation:
The average rate of change over the interval from x1 to x2 is ...
(f(x2) -f(x1))/(x2 -x1)
For x1 = -10 and x2 = 0, this is ...
(f(0) -f(-10))/(0 -(-10)) = (-6 -184)/10 = -19
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Please be aware that some versions of this question ask for the average rate of change over the interval 0 to 10. That is a different interval and that rate of change is different.
