Answer: (1) 700 pizzas
(2) Its revenue increases by $2600.
Explanation:
Given that,
price elasticity of demand for his pizza = -4
Percentage change in price = 10%
Initial Quantity,
= 500 Pizzas
Elasticity of demand = 
-4 = 
= -4 × 0.1
= 0.4
= 0.4
∴ 
= 700
Initial price, 
= $20
Changed price, 
= $18
Revenue at t = 0
= 500 × 20 =$10000
Revenue at t = 1
= 700 × 18 = $12600
Therefore, from the above calculations it was seen that his revenue increases by ($12600 - $10000)= $2600 and its sales increases to 700.
Answer:
<em>The amount that he will be charged in a special assessment tax to cover his cost of the sidewalk Is $2000 </em>
<em></em>
Explanation:
We are told that the property is an interior lot, so we'll only consider one of the width of his plot, since the sidewalk can only pass through the front or the back of his property.
The property measures 100' x 500' , that is 100 ft width by 500 ft length
The cost of the sidewalk is $40 per linear ft
The city will pick up 50% of the cost.
For a width of the lot, the cost per linear length will be
100 x $40 = $4000
The city covers 50% of this cost, leaving 50% of the cost to the homeowner.
The homeowner's cost will be 50% of $4000
= 0.5 x $4000 =<em> $2000 </em>
<em>The amount that he will be charged in a special assessment tax to cover his cost of the sidewalk Is $2000 </em>
