Can someone please answer this? My grades are being permanently put in, In 11 hours! I am horrible when it comes to math, I really need to turn this one assignment in before my math grade gets put in!

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?

Factor this polynomial completely. x^2-8x+12