Zorah, a musician, pays $120 to have her instrument tuned and $10 per hour for a booth at a fair. she estimates that she earns $25 per hour in tips. the equation can be used to represent the break-even point. 120 + 10x = 25x how many hours, x, will zorah have to play in order to break even?

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?