What did I do wrong? The answer is x = -4 right?

Julia measured the high temperature in her town for one week. using the chart above, find the mean absolute deviation for the high temperatures. round your answer to the nearest tenth. be sure to show your work for finding: the mean of the set of data the distance of each number from the mean the mean absolute deviation

What number produces an irrational number when multiplied by -1.25

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?