Gyuihd please help [photo attched]

Can anyone me with 32,33,36,37,and 40.

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