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demand for a brand of clock radio is given by p+3q=390 , and the supply for these radios is given by p=7q=90 , where is the price and is the quantity demanded at price . Solve the system containing these two equations to find the price at which the quantity demanded equals the quantity supplied and the equilibrium quantity.

Respuesta :

calculista

Answer:

p=$300 and q=30 clock radio

Step-by-step explanation:

we have

p ----> is the price

q ----> is the quantity

[tex]p+3q=390[/tex] ----> equation A

[tex]p-7q=90[/tex] ----> equation B

Solve the system of equations by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

The intersection point is (300,30)

see the attached figure  

therefore

The solution is

p=$300

q=30 clock radio

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