What are angles that share a common side and common vertex but do not overlap?

Which of the following graphs could represent a quartic function?

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

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42