Need help with these math questions pls help me will mark brainiest.

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

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

What is the slope of (0,32) and (100,212)