hunter left his house at time zero and drove to the store, which is 18 blocks away, at a speed of 3 blocks per minute. Then he stopped and went into the store for 4 minutes. From there, he drove in the same direction at a speed of 1 block per minute until he got to the bank, which is 3 blocks away from the store. He stopped at the bank for 5 minutes. Then drove home at a speed of 7 blocks every minute.