From 5 a. m. to noon, the temperature rose 15 °F to a high of 10 °F. What was the temperature at 5 a. m.?
A. –15 °F
B. -5°F
O c. 5 °F
D. 25 °F

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