If the price of a CD is lowered from $15 dollars to $10 dollars.
If the price of a CD increases from $15 dollars to $18 dollars.
If you received a demotion in your job and with it come a pay cut.
If you are promoted and your boss gives you a raise which increases your pay $1000 per week.
You are fired from your workplace and have to go on Unemployment Insurance
The 4th concept in the law of demands?
The satisfaction received from consuming each additional unit, as that units price declines?
I buy 4 tacos at $1.00 a piece, because I will eat them all at one sitting?
I buy 3 tacos at $1.00 and then buy the 4th one at $1.50 cents as my hunger diminishes?