Answer: I know about this question I’m struggling on it..
Step-by-step explanation:
Answer:
9
3x+18+9x-27=99
12x-9=99
12x=108
x=9
Answer: 15%
% change = change/ actual value x 100
Change = 11 .50 - 10 = 1.5
Therefore % change = 1.5/10 x 100
= 15%
96