Perform the indicated operations:
2/x-2+x/x+9-x+20/x2+7x-18

Which system of linear inequalities is represented by the graph? !

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

Are the corresponding angles congruent? explain why or why not.