Mike took a taxi from his home to the airport. the taxi driver charged an initail $6 plus $3 per mile. the total fare was $24, not including the tip. how many miles did mike travel by taxi on this ride?

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