Your bedroom wall is 129 inches wide. You want to hang two posters, each 24 inches across, with an equal space between each poster and the wall edges. How many inches of space should you leave between the wall edge and each poster?

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