:) pls help me with this math problem! thx <333

Will mark brainliest. when ∆rst is translated 4 units down, what are the apparent coordinates of t’?

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

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !