The answer is nine, because the ratios need to stay equal. 9+3=12, 6+3=9
14x-21y+42 should be your answer. hope it helps :)
Answer:
percent change = 27.5 % decrease
Step-by-step explanation:
percent change = (original - new)/original
percent change = (160-116)/160
percent change = 44/160
percent change =.275
change from a decimal
percent change = 27.5 % decrease