Avery works on commission as a car saleswomen. she sold a car today that cost 8,000$ and received a 400$ commission. what percent of her sale is avery’s commission?

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