What is promotional elasticity in economics?

Below are some terms that the professor mentioned. Can you please provide an explanation of what it means and provide an example. Perfectly inelastic Inelastic elasticity Elastic elasticity Perfectly elastic THANK YOU are there any other ones?

Also, what is the formula and how do I use it? -Delta Q * P ----------- -------- Q ......... AP THANK YOU

1. The absolute value of the short-run elasticity of demand for bread has been estimated to be 0.15. Its long-run elasticity of demand is: Question 1 options: A. uncertain without more information. B. more than 0.15. C.0.15. D. less than 0.15. 2. All...

1. Suppose = -0.8. If price falls by five percent we can conclude that D∈ a. quantity demanded will decrease by six percent. b. consumer expenditure will decrease by one percent c. quantity demanded will increase by four percent. d. demand for the...

2. "As income goes up, we find that you do not smoke cigarettes more. You don't tend to smoke more when you make more money." What does this sentence imply about the income elasticity of demand with regards to the group described in this sentence...

1. The elasticity of labor supply measures the responsiveness of hours worked to a wage change. a) explain how we calculate the elasticity coefficient. b) What is the range of values the elasticity coefficient might have? Explain and show graphically...

11) Suppose the supply elasticity is 0.6. What must the demand elasticity be? a) - 0.6 b) - 0.9 c) – 0.5 d) – 0.3

Who can solve this economics question ??? On PED elasticity Urgent help? If cross elasticity of demand for coffee and tea is 1.2 If a store sells coffee at 40p a cup and sales of coffee for each month is 1000 If the same store sells tea for 35p a cup...