Dario is on a cycling trip. He started at 0 km. He is now at position 20 h × (−20 km/h). When did he reach each of the following positions? Explain your reasoning.

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Which expression is not a polynomial?

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