Maria drops a hammer from an apartment that is 30 meters above the ground. The
height of the hammer in meters, h, after t seconds is modeled by the function
h(t) = -t - 2t + 30. Find the approximate number of seconds it will take for the
hammer to hit the ground. Round your answer to the nearest whole number.

A.0
B.5
C.10
D.30

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?