Thing is, you didn't give us the choices!
Answer:
70 patients will get the medicine.
Step-by-step explanation:
Answer: 
Work Shown:

This can be rewritten into 
Answer:2.2
Step-by-step explanation:100.8-98.6=2.2
Answer:
90
Step-by-step explanation:
The mode of the set is the number that occurs the most. In this case, 90 occurs more than any of the other terms. You can keep track using a tally chart:
80 |
82 |
90 ||
92 |
86 |
74 |
68 |
88 |
98 |