Please help me get this easy maths question I’m mentally unwell

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

Ineed with the quizzes in apex mathematics ii

Alocal restaurant advertises that the mode cost of their most popular meals is $8. if the costs of their most popular meals are $7, $8, $8, $12, $13, $15, $17, $18, and $20, which word or phrase best describes this kind of advertising? accurate inaccurate accurate, but misleading inaccurate and misleading