Which sets of ordered pairs represent relations that are functions? you may choose more than one correct answer.
{(1, 0), (2,0), (3, 0), (4,0}}
{(2, 3), (2, 4), (2,5), (2, 6))
{(1, 1), (2, 2), (3, 3), (4,4))
{(1,3), (-1, 4), (1, 4), (-1,3)
((6,-6), (-6, 6), (5,-5), (-5,5))

What is the factored form of x2 − 4x − 5? (x + 5)(x − 1) (x + 5)(x + 1) (x − 5)(x − 1) (x − 5)(x + 1)

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?

If the segment op is dilated by a scale factor r=2, what is the length of segment op? a)10cm b)16cm c)6cm d)4cm