Roger ran 50 meters to the left, turned around and ran 100 meters to the right, and then turned around once more and ran 10 meters to the left Determine his total displacement and distance traveled from the starting point

Ineed i do not understand i'm only 8

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?

Math it's appreciated. (picture provided)