What are the domain and range of the step function below PLEASE HELP LEST TEST OF CLASS NEED ASAP ANSWER WILL GET 30 points

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.

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?