If -2z+3=9 what is the value of 2/3z?

Please Explain the steps.

Simplify the expression. enter the correct answer.

Draw a scaled copy of the circle using a scale factor of 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