Which expression is equivalent to the following complex fraction? Х
X-3
x2
6-zX
X-3
х
X+ 3
X+ 3
o
Х
Х
X+ 3

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