Answer:
A - elastic since many other fast food items could be considered close substitutes.
Explanation:
The price elasticity of demand is how much the demand of the Big Macs will change due to a 1% change in price. Should the elasticity be greater than 1, the Big Macs will be elastic. Should it be less than 1, the Big Macs are inelastic.
Demand elasticity is calculated as the percentage change in quantity demanded divided by a percentage change in price.
Since Big Macs are (i) a luxury good, and (ii) have close substitutes (other burgers available at McDonalds and other fast food stores), we will say their elasticity is greater than 1.
This means that the demand of Big Macs will change due to a 1% increase in price due to the presence of close substitutes.
Retrograde. Planets seem to move forward and then backward sometimes. This is really because we pass them as we move in our orbit but astronomers wanted to try to describe the solar system with earth at the center so elaborate models were employed.
B.) The moon
There you go.
Complete Question
The complete question is shown on the first uploaded image
Answer:
Explanation:
From the question we are told that
The initial pressure of the gas is 
The volume of the second bulb is 
The final pressure of the gas is 
Let the unknown volume be represented as 
Generally from Boyle's law we have that
=> 
=> 
Explanation:
first one will be second one
as the charge cancels out
second one will be forth one
as it has possitive charge
