Michael’s breakfast bill came to $ 7.65. He wants to leave a tip that is 15% of the bill. How much tip should he leave? How much money will he spend in all?

Can any one me with the answers to these questions asap?

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

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2