In triangle ​ABC, AB= 21.1 ​, AC=12.3​, and BC=22.8 . What is measure of angle ​A?

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

Which of the following circles have their centers in the third quadrant?

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