In one 24-houer day, sam took 4 naps for:

3 hours, 25 minutes,
4 hours, 2 minutes,
2 hours, 58 minutes,
4 hours, 11 minutes.
how long is sam awake?

and if you don't mind can you show me how you anwsered it?

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