The temperature in lakeside was 21°c. the temperature in salem was 9°c. how much warmer was the temperature in lakeside than the temperature in salem?

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?