16 A grey-headed albatross flew many days at sea and was recorded flying a distance of 13,670 miles in 46 days. What was the average speed, to the nearest mile per hour, for the albatross's journey? A) 1 B) 12 C) 297 D) 570​

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