If the length of the side of a square changes by a factor of 3, by what factor does the area change?

Use sigma notation to represent the following series for 9 terms.

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?

On ryan's last social studies test there were two types of questions true/false worth 3 points each and multiple choice questions worth 4 points each