The amount of money M a woman makes per week varies directly with the number of hours h she works per week. If she works 10 hours and earns $127, how much does she make if she works 15 hours? IF she works 15 hours, she makes $

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