Use the following graph of the system of inequalities Sy<31 – 2
to answer the question.
y?-1
8
Region 4
6
4
Region 1
2
-6
-4
-20
-2
Region 3
O
16
Region 2
-8
2017 FlipSwitch. Created using GeoGebra,
Which region represents the solution set for the system of inequalities?
Region 4
Region 1
Region 2
Region 3

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