Katy goes to work every other day. abby goes to work every 3 days (she takes two days off after each day she works). if they worked together today, how many days will it be until they work on the same day again?

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