4) What is the measure of angle B?* 102
133
E
117
B
170
А
F
OA) 98 degress
OB) 108 degress
OC) 118 degress
OD) 128 degress

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