40 is 1 tenth because 40 x 10 is 400
Answer:
a) Demand equation :
b) Supply equation : 
C) The equilibrium quantity and the equilibrium price are 2500 and $ 525 respectively
Step-by-step explanation:
We are given that For each decrease in unit price of $20 below $485, the quantity demanded increases by 250 units.
Since decrease in unit price of $20 increase demand by 250 units
So, Slope =
We are given that The quantity demanded x of a certain brand of DVD player is 3000/week when the unit price p is $485.
Now for demand equation:
Use point slope form : 
So, 
a)So, Demand equation : 
Now to find supply equation
We have two points (0,350) and (2500,525)

b) So, Supply equation : 
Now to find equilibrium quantity and price equate demand and supply equation

So, equilibrium quantity = 2500
To find equilibrium price substitute equilibrium quantity in any equation

C) The equilibrium quantity and the equilibrium price are 2500 and $ 525 respectively
Answer:
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Step-by-step explanation:
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Answer:
Step-by-step explanation:
Multiplier: -175/3 Decrease: 23⅓ %
Step-by-step explanation: 75 = 250 - 3(d) d = -175/3 Y = 250 - (175/3)m
Where m is the no.
of months Y is the new value
(175/3)/250 × 100 = 70/3 %
Or 23⅓ %