5) State whether each of the following represents a fixed or dynamic population: San Antonio Residents Women who have had hysterectomies by age 45 Children who developed autism in 2009 Public health graduate students majoring in epidemiology

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