Answer:
1. 0.9
2. -20.4
3. 4.6
4. 1.6
1,1.1,1.25,1.5,1.7,9
If it decreases by 80٪, then only 20٪ remains.
15×20٪=15×20/100=15×0.2=3
Answer: 3
-6 2/3
Step-by-step explanation: