Answer:
The answer is 4th diagram, as r < -8 so it is an open dot at -8
Step-by-step explanation:
First, move all the unknown value to one side :
-2r + 3 > 19
-2r > 19 - 3
-2r > 16
Second, solve it to find the value of r :
-2r > 16
r < -8 (when divided or multiplied by a -ve no. , need to change the symbol)
● means greater / smaller / equals to a no. (closed dot)
○ means greater / smaller to a no. (open dot)
