Answer:
62.1
Step-by-step explanation:
PEMDAS!
9.1 * 3 = 27.3
8.7 * 4 = 34.8
27.3 + 34.8 = 62.1
3 5 2
in 3/4 year tree had grown 2/3
in 1 year tree had grown (2/3)/0.75 =8/9 feet