A geologist measures the mass of some rocks to the nearest tenth of a gram and makes a dot plot of the data. The masses are: 5.3, 5.5, 5.6, 5.4, 5.4, 5.3, 5.8, 5.7, 5.8, 5.5, 5.5, and 5.3 grams. She lists two numbers on the number line. How many more numbers will she put on the number line? Answers:

A: 2
B: 3
C: 4
D: 5

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.