Last tuesday, regal cinemas sold a total of 8500 movie tickets. proceeds totaled $64600. tickets can be bought in one of three ways: a matinee admission cost $5, student admission is $6 all day, and regular admissions are $8.50. how many of each type of ticket was sold if twice as many student tickets were sold as matinee tickets?

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