A figure is going to be dilated by a scale factor of 3.5. A. The area will change by a factor of 3.5.
B. The area will change by a factor of 7.
C. The area will change by a factor of 12.25.
D. The area will change by a factor of 49.
Which of the following describes the effect of the dilation on the area of the figure?

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