Which expressions are equivalent to this expression? y+y+y+3z select each correct answer. 3+y+3z 3(y+z) 2y+2z+y+z 3y+z

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours