Answer: Option (a) is correct.
Explanation:
Income elasticity of demand measures the responsiveness of quantity demanded with change in the income level of an individual.

Income of an individual has a positive relationship with the demand for normal goods and has a negative relationship with the demand for inferior goods.
Answer:
Investor A = $545216 .
Investor B = $352377
Investor C = $897594
Explanation:
Annual rate ( r ) = 9.38%
N = 41 years
<u> Calculate the balance at age of 65</u>
1) For Investor A
balance at the end of 10 years
= $2000 (FIA, 9.38 %, 10) (1 + 0.0938) ≈ $33845
Hence at the end of 65 years ( balance )
= $33845 (FIP, 9.38 %, 31) ≈ $545216 .
2) For investor B
at the age of 65 years ( balance )
= $2000 (FIP, 9.38%, 31) = $322159 x (1 + 0.0938) ≈ $352377
3) For Investor C
at the age of 65 years ( balance )
= $2000 (FIP, 9.38%, 41) = $820620 x (1 + 0.0938) ≈ $897594
The marketing of services differs from product marketing because of the four fundamental differences involved in services: services are intangible, inseparable, heterogeneous, and perishable
Price matching and Shipping directly are trends office supplies and Best Buy offers, which can compete with ratailers online who sells similar products.
<h3>What is marketing?</h3>
Marketing refers to the process of getting people interested in a company's product or service. It is a process a company undertakes to promote the buying or selling of a product or service.
The essence is to create awareness of the product to potential buyers so that they can purchase the products.
Hence, trends among category killers such as Staples for office supplies and Best Buy for electronics include price matching and Shipping directly from any store rather than just warehouses
Learn more about marketing here : brainly.com/question/25369230