(02.06 mc)

what is the measure of angle x?

a pair of parallel lines is cut by a transversal. an exterior angle on the left of the transversal is labeled as 40 degrees. an interior angle on the right of the transversal, which is not vertically opposite to the 40 degree angle, is labeled as x.
40 degrees
80 degrees
130 degrees
140 degrees

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?