I have already done this question. The correct answer is c
The answer would be 16
11 + (8-3)^2 - 20 = 16
I’m pretty sure that’s probably a nickel
3r-6=-21
3r-6+6=-21+6 (Add 6 to both sides...)
3r=-15
r=-5
3r-6=21
3r-6+6=21+6 (Add 6 to both sides...)
3r=27
r=9
r=-5 or r=9
