Abag contains 2 red balls and 18 green balls. a ball is chosen at random from the bag. what is the best answer for the probability of drawing a green ball? a) impossible b) unlikely c) very likely d) certain

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