The variable of interest would be whether or not their eyes were affected.
Variables of interest are like independent variables, they are the variable that you are testing for change.
20 + 3 - 8/4 + 12
35 - 8/ 4
140 - 8/ 4
132/4
33
The last number line the correct answer!
-2a-5>3
-2a>8
a<-4
( the sign is flipped in the end because when you multiply or divide by a negative number, the sign flips the other way around)
I believe the answer is b!!
- hope this helped!!
