Help pleasee having a bad day, and really stressed out what is ammonia Conductivity in Solution?

a. light bulb shines brightly

b. light bulb shines dimly

c. light bulb shines doesn't shine

and explain why you chose that answer

i put it in the wrong subject this is chemistry

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work