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?

Solve the system by the elimination method. 3x - 2y - 7 = 0 5x + y - 3 = 0 to eliminate y, the lcm is 2. which of the following is the resulting equations? 1.3x - 2y - 7 = 0 5x + y - 3 = 0 2.3x - 2y - 7 = 0 -10x - 2y + 6 = 0 3.3x - 2y - 7 = 0 10x + 2y - 6 = 0

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

2.5 milligrams is equivalent to how many grams