What is great 18 or negative 19

Can someone show me step by step how to do this?

Someone me! will award brainliest if u explain and answer!

Give the domain and range. a. domain: {0, 2, 4}, range: {2, 6, 10} b. domain: {0}, range: {2} c. domain: {2, 6, 10}, range: {0, 2, 4} d. domain: {2}, range: {0}