A metal machine part is 21 millimeters long, 21 millimeters wide, and 4 millimeters thick. A square that is 6 millimeters on each side is punched from the middle of the metal solid. What is the surface area of the resulting figure?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.