Answer:
33.195%
Step-by-step explanation:
AMDM: 221 students
Physics: 241 students
Taking both: 80 students
80/241 = ~33.195%
Answer:
B
Step-by-step explanation:
The photo is unclear but based on what I saw, -61 is smaller than +61.
Answer: 
Step-by-step explanation:

Minus the 10 from the 50, which makes 40. then divide 40 by 8
50-10=40
40÷8=5
n=5