Find the geometric mean of the pair of numbers below. if necessary, give the answer in simplest radical form. 5 and 18

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show

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