Vivi is a drummer for a band. she burns 756 calories while drumming for 3 hours. she burns the same number of calories per hour. how many calories does vivi burn per hour?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

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