What is the mode of this set of data?

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Witch represents the inverse of the function f(x)=1/4x-12

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