After the Mount St. Helens volcano erupted in 1980, the elevation of the mountain decreased by about 13.6%. Its elevation had been 9677 ft. What was its
elevation after eruption? Show your work.

Aportion of a line bounded by two points is defined as

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

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