The thing is that every 4 years, the tree grows 6 inches, so that could be expressed as a ratio, 4/6. That also means that every two years, the tree grows 3 inches since it could be simplified to 2/3.
This is a lot of math to write.... so I'll just say the answer is -21 :D
Answer:
you should put 6 because 3/8 X 6 =18/8=2 2/6
Step-by-step explanation:
