Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed(used) in the local supermarket to get a free shampoo. what fraction of coupons were unused?

Atruck travels from a factory to a gas station in 4 minutes. it stops at the gas station for 3 minutes. the truck then returns to the factory in 3 minutes. which graph best represents the distance, y, in miles, of the truck from the factory for a certain amount of time, x, in minutes?