Describe the faces of a non square rectangular pyramid

Which of the following is the formula for the sequence graphed below

The sum of two numbers is 86, and their difference is 20. find the two numbers

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