Answer: (b) -3.08
Explanation:
The relationship between the demand(q), price per unit product(p) and the disposable income,yd is given by the expression below;
q= 20ln(7yd-2p).
From the expression above, the marginal demand,
∂ q/∂ p is the differential of the equation of relationship between the demand, price and disposable income.
This involves considering the demand,q as the dependent variable and the price per unit product,p as the independent variable and the disposable income,yd is considered constant.
Therefore ,
∂ q/∂ p= (-40)÷(7yd-2p)
By substitution of
yd =$3000÷1000= $3
and p= $4
∂ q/∂ p= (-40)÷((7×$3)-(2×$4))
∂ q/∂ p= -40÷13= 3.08
Please see the attachment for knowledge on how ∂ q/∂ p was obtained.
Every individual or business wants to make profit this is done by providing goods and services that satisfy people's needs and wants.
<h3>What is a business?</h3>
A business is an organization that aims at making a profit by providing goods and services that are desired by individuals also known as customers.
Business meets a need and gets profit in return.
Therefore, A Business is defined as trying to earn a profit by providing goods and services that satisfy people's needs and wants.
learn more on business here
brainly.com/question/24553900
<h3>It doesn't matter, things changes and people changes but atleast if it changes it should change for the BETTER.</h3>
Good luck ✅.
When the average price level rise in the USA relative the to the average price levels in other countries, American products become more expensive for those countries. Hence, there will a fall in imports level. On the other hand, countries with Lowe prices should experience a rise in the price exports because their products are more price-competitive.