The dance committee was given money to pay for a DJ and refreshments for the spring dance. After paying $125 to the DJ, the dance committee had $250 left to spend on refreshments. Which equation can be used to find a, the original amount of money the committee was given?

a−$125=$250

$125×a=$250

$250−$125 = a

$250÷a=$125

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?