Help? Three students were given the expression shown to simplify. Use the drop-down menus to complete the statements about whether each student's answer is an equivalent expression. Then choose an expression that is equivalent. The first box’s options are: Correct / Incorrect The rest are in the other images

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

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The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude