Mary is making pillows for her life skills class. she bought 2 and 1 half yards of fabric. her total cost was $15. what was the cost per yard?

Which expression is the factorization of x^2+10+21

The graph of y=x3 is transformed as shown in the graph below. which equation represents the transformed function?

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?