Which is a better buy 13 and 10 or 18 and 15

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

Secant be and cf intersect at point d inside a what is the measure of cde

Proportions in triangles solve for x