Asystem of linear equations in two variables can have solutions

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

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