If their is a 7% tax on a $15 toy, what is the tax amount

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

This is different from the first one can someone me

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