
Ashley H. answered 12/18/19
Tutor
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Math and Accounting Tutor
This problem is telling us that r is positive for the first part and negative for the second. The or means there's 2 inequalities.
0 < r
or
r < -8
Visually it looks like this:
<---------8-------------0---------->
The circle to mark -8 is solid and the one on the 0 is open