What’s two times two take away one times two

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.

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?