Start with
Multiply the whole equation by 2. Since 2 is positive, we don't need to switch the inequality sign:
Subtract 3 from both sides:
Answer:
Graph B is correct
Step-by-step explanation:
12h-9h=3h move everything else to other side
3h=20-40+6
3h=-14
divide by 3
h=-14/3
There is 60 seconds in 1 minute
600/60 = 10
10 minutes is your answer
hope this helps