Consider the following three events for college students: aequals{a student is female.} bequals{a student has financial aid.} cequals{a student finishes his/her undergraduate degree in four years.} describe the event upper c vertical line upper a in words.

Dominic and stacy each have a stamp collection. dominic has six fewer stamps than three times the number of stamps stacy has. dominic and stacy decide to give all of their stamps to their younger sister, mary. if stacy had s stamps, which expression represents the number of stamps that mary received? a. (3s − 18)(3s − 6) b. 2s − 18 c. 4s − 6 d. 4s − 18