Factor the following expression, and verify that the factored expression is equivalent to the original 16x²-8x-3

Can someone me and plz do the problem

Icould really use some with this question.

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