Which of the following relations is a function? O A. {(- 1,-4), (-1,0), (- 1,5), (- 1, 7), (- 1,9)}
OB. {(-2,-4), (- 1, 7), (1, - 1), (1, 1), (3,9)}
OC. {(-4,9), (-3, 1), (-2,3), (-2, 12), (0, 6)}
OD. {(0, - 4), (1, - 4), (2, 4), (3, 4), (4, - 4)}

What is the value of the digit 1 in the number 13?

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below.correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance.what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.