Jeanette purchase a concert ticket on a website the original price of the ticket was $75 she used a coupon code to receive 20% discount the website applied a 10% service fee to the discounted price jeanette stick it was less than the original price by what percent

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