Someone plz help me plz ;-; on both plz

What is the least common multiple of 16 and 3?

Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=