Answer:
lets just say -8
Step-by-step explanation:
Answer:
20
Step-by-step explanation:

multiply both sides by 35

divide both sides by 35

Set up a proportion: 25/100 = 50/n where n = # of teens surveyed
Simplify fraction: 1/4 = 50/n
Cross multiply: n = 200
So 200 teens were surveyed.
I think it would be the 3rd one if not im sorry i tried