Applied Math on determining price elasticity of demand

The marketing team for a restaurant wants to determine the price elasticity of demand coefficient for its steak dinner.
It priced its dinner at different price points in local restaurants to see how many would be sold at different prices. The following is the result of the price trials:

Price Quantity
$15 1000
$10 2000

The formula for calculating the coefficient of the price elasticity of demand is:
Percent change in qty / percent change in price (midpoint formula).
Remember to use your rules of algebra when calculating this problem.
Calculations in parentheses first.
Divisions and multiplication next
Addition and substraction last.

ABC, Inc sells it toys for $15 with a sales volume of 30,000 units per quarter. Assume the priceelasticity coefficient is -0.5 and ABC, Inc raises the price to $16 in anticipation of the Christmas season. Estimated 4th quarter sales volume will be?
Use Are formula elasticity of demand.

Quantity PriceElasticityDemanded
100 $ 5
80 $10
60 $15
40 $20
20 $25
10 $30
1. Determine the priceelasticity of demand at each quantity demanded using the formula % chg in QD divided by % chg in price.
2. Redo #1 using price changes of $

Consider a service that you buy frequently. (Can use pedicure 2 times per month at $50 for graph and calculation)
a. Suppose that the price was 5% lower and all other factors do not change. How much more would you buy each year?
b. Using this information, calculate the own-priceelasticity of your demand.

The demand schedule for the product 'xyz' is given below:
Price($) Quantity demanded
3 20
4 15
5 11
6 9
7 7
Task: Based on the above data, solve the questions given below:
Compute the point priceelasticity of demand for an increase in the p

Suppose the price of apples rises from $3 to $3.50 and your consumption of apples drops from 35 pounds of apples a month to 20 pounds of of apples. Calculate your priceelasticity of demand of apples. what can you say about your priceelasticity of demand of apples? Is it elastic, inelastic, or unitary Elastic? Be sure to show

1. Determine the priceelasticity of demand at each quantity demanded using the formula: Percentage change in quantity demanded = (Q2-Q1)/Q1 divided by percentage change in price = (P2-P1)/P1
b. Redo exercise 1a using price changes of $10 rather than $5
c. Plot the price and quantity date given in the demand schedule. Indi

Suppose Qd = 10,000-2Px+3Py-4.5M,
where Px = $100, Py = $50, and M = $2,000.
What is the own-priceelasticity of demand?
A. -2.34
B. -0.78
C. -0.21
D. -1.21