Leslie mows lawns to earn money. For each costumer, she chargers $2.00 for gas and 3.00 per 1/2 hour of work. Let x represent the number of hours of work . Let y represent the amount of money, in dollars, Leslie earns. The table below shows some of the data from her lawn mowing

You know that the sum of angles of line CX has to be 180 degrees. Therefore, because you know angle EDX equals 134 degrees, and 180-134= 46, you know that angle CDE equals 46 degrees. Because you know the 3 interior angles of a triangle equals 180 degrees, if you subtract 180 - 46 - 105 = 2x-13. This simplified is 29= 2x-13. Further simplified, 42=2x. Therefore x=21 degrees.

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