Answer:
A solid white line between lanes of traffic means that you should stay in your lane unless a special situation requires you to change lanes.
Hope that helps :)
Answer:
≅ -1.7.
Explanation:
Let's calculate the change in quantity:

Let's now calculate the change in price:

Finally, let's calculate the price elasticity of demand:

I believe the answer is: sleep debt
Sleep debt refers to accumulative effect that keep increasing as people keep not getting enough time for proper sleep. Studies show that in the long run, sleep debt would resulted in decreasing overall productivity and the actual effect of repaying sleep debt could only be felt if the debt is paid within one week period.