Final answer:
Julián would be 75 feet away from the store if he decided to go there now.
Step-by-step explanation:
To find the distance Julián would be from the store if he decided to go there now, we need to subtract the distance he walks to his friend's house from the total distance. Since he walks 375 feet to the store and then goes 300 feet in the opposite direction to his friend's house, we subtract 300 from 375 to get the final distance.
375 - 300 = 75 feet
Therefore, Julián would be 75 feet away from the store if he decided to go there now.