What is the difference between a bimodal histogram and a symmetric histogram?

Which expression is equivalent to the expression shown?

Select a graph that have an equation with a < 0

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