If the r value, or correlation coefficient, of a data set is 0.827, what is the coefficient of determination to three decimal places

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)

How do i i solve this equation? -18 = x/3 + 3

The side of a square is 3 and 5/2 inches