Answer:
Are you wondering what she ought to do? I would recommend that the individual who was injured make her own choice. If the concussion is quite severe and a doctor has instructed her to refrain from any activity, then it's important to follow that advice. However, if the concussion symptoms are mild, she should be aware of her own capabilities and decide accordingly.
Answer:
129
Explanation:
40 is found by subtracting 16 from 56.
Then, adding 89 gives a total of 129.
Applying the disinfectant once removes 90% of the bacteria, leaving 10% remaining.
Applying it a second time eliminates 90% of that remaining 10%, so you calculate 10 minus 90% of 10 to find the leftover bacteria after two applications.


This results in only 1% of the bacteria still being present, meaning that
99% of the original bacteria have been eradicated.