HELP PLEASE i really need it

What is fraction that is equivalent to 3/8

30 points if you answer all 3 questions with work!

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}