Gcd of 21n+4 and 14n+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.

What is the 12th term of b(n)=-4-2(n-1)

Write the rational number in lowest terms 99/-15