You have $100 to spend on downloading podcasts for your Walkman. iTunes charges $2 per podcast, and Spotify charges $5 per podcast. Write an equation that models this situation. If you already downloaded 15 podcasts from Spotify, how many podcasts can you download from iTunes?

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?