Students in 7th grade took a standardized math test that they also had taken in 5th grade. The results are shown on the dot plot, with the most recent data shown first. Find and compare the means to the nearest tenth.

7th-grade mean:

5th-grade mean:

What is the relationship between the means?

Which representation has a constant of variation of -2.5

Can someone me out here and the tell me the greatest common factor

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.