Answer:
The answer is "7".
Step-by-step explanation:
Given values:

Answer:
1. the plants grew 50%
2. if the plants grew to be 8 inches instead of 9 the they would have grown 33% which is less than 50%
3. 100% increase
Step-by-step explanation:
See image for steps
0.33 = 33/100.
It cannot be reduced after that.