Factor out the Coefficient of the Variable- "-9x-36"

Which expression is equivalent to 3^3 + 2^2?

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

I'm confused on this could anyone me and show me what i need to do to solve it.