Calculator Diane and Curtis surveyed 8 of their friends to find the average number of minutes spent on math homework, per day. They recorded
the results of their survey in a list.
80, 75, 30, 70, 40, 55, 90, 20
What is the mean absolute deviation of this data set?
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What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)