Help pls pls pls pls pls pls

Use set buikder notation to represent the following set: {, -2, -1, 0}

Plz. yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?