A metal bar is heated to a certain temperature and then the heat source is removed. At time t minutes after the heat source is removed, the temperature, theta degrees Celsius, of the metal bar is given by theta=280/(1+0.02t). At what rate is the temperature decreasing 100 minutes after the removal of the heat source?

Which choice represents the sample space ,s for this event

This is different from the first one can someone me

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.