Kurtis is watching a movie. The movie lasts 280 min. Kurtis has watched 30% of!the movie so far. How many minutes of the movie has Kurtis watched? Show!your!work.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

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?

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?