What is the least common denominator of 7/x^2 7/5x explain

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

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?

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?