4x+7y=-22 i really need what are the letters

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

What is the perimeter of a rectangle if the length is 5 and the width is x?

Classify the following number. −9.070707…