Each angle size and an explanation

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 measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Math i have no idea how to do a and b