A store sells a video game package that consists of the game system, a controller, and a game. The store purchases the gsme system for $250, the controller for $4, and the game for $11. the percent markup is 22%. Find the selling price of the package​

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z