Answer:
x > -11
Step-by-step explanation:
The way fractions type on here are weird, so i typed it on a different website i think this is right though.
First, multiply -6*-5. This equals (positive) 30 because the negative signs cancel out.
This leaves you with:
30+12
Doing the addition leaves you with 42.
The answer is 42.
I hope this helps :)
In interval <a, b> the average rate of change the function you count from this formula:

Here you've got a=-1 and b=1: