9. Hint: Utilize the height of the roof. * 1 point
Mr. Rose is remodeling his house by adding a room to one side, as shown in the
diagram below. In order to determine the length of the boards he needs for the roof of the
room, he must calculate the distance from point A to point D.
Roof
7
25
New Room
田田田田
What is the length, to the nearest tenth of a foot, of AD?
16
16.5
16.6
O 17

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