If 3 candy bars cost $2.70 at the gas station mart. What is the cost for 1 candy bar?

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

Which of the following parabolas opens down?

In a column proof the right column states your reasons