Michah is at a donut shop and wants to choose his own dozen. There are ample glazed chocolate and jelly donuts. If micah wants at least two jelly donuts how many different combinations of donuts can micah use to create a box of a dozen donuts.

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