Ms. peterson wrote the expression below on the chalkboard for her class. she asked the students to write an equivalent expression using no more than one set of parentheses. 4(3x + 5y + 2z) + 3(x-z) tom wrote 12x + 20y + 8z  jenna wrote 5(3x + 4y + z) chris wrote 15x + 20y − 5z  which, if any, of the three students wrote an expression that is equivalent to ms. peterson’s expression?

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?