If I am correct it would be C. I hope this helps.
Answer:
14
Step-by-step explanation:
Note that 14 is a factor of 28 and also a factor of 56. Thus, 14 is the greatest common factor of 14, 28 and 56.
The y intercept is when x=0 so y=1/2(0) -3 so y=0-3 so y=-3
Answer: 150 minutes
Step-by-step explanation: 30 x 5 = 150