Step-by-step explanation:

i hope its good
Step-by-step explanation:
students in previous year=35
students in next year=42
difference=42-35
=7
Now,
change%=7/42×100%
=16.67%
What’s the last question? please attach a photo
Answer:
40ft
Step-by-step explanation:
√100=10
10*4=40ft