your grandparents are celebrating their 50th wedding anniversary, and you are helping plan the party! you are in charge of ordering the balloons, the cake, and the party favors. you have been given a budget for each category, and your goal is to get as close to the provided budget as possible. a total of 75 guests will be attending the party

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