Which situations can be represented by the expression -75 + 75? Choose all that apply.

A: Last night Sarah read 75 fewer pages than the night before. She reads
75 pages tonight.

B: A diver is 75 feet below the surface of the water and then comes up to
the surface.

C: Peter adds 75 milliliters of water to a test tube containing 75 milliliters.
Amber owes the phone company $75 and she pays them $75.

D: Amber owes the phone company $75 and she pays them $75.

Please help due at 11:59!

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?