Helppp please helpp please

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

Need showing work for this problem 56.25 ×25.80

3c2 + 2d)(–5c2 + d) select all of the partial products for the multiplication problem above.