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Wittaler [7]
3 years ago
13

Producers will make 1000 refrigerators available when the unit price is $280.00. At a unit price of $400, 5000 refrigerators wil

l be marketed . Find the equation relating the unit price p of a refrigerator to the quantity supplied x if the equation is known to be linear.
p =

How many refrigerators will be marketed when the unit price is $440?______ refrigerators

What is the lowest price at which a refrigerator will be marketed? $_________ (lowest price)
Mathematics
1 answer:
Kobotan [32]3 years ago
6 0

Answer:

For linear equations we use:

p=mx+b   ------  (1)

Now we have the following coordinates:

(x1,p1)= (1000,280) and (x2, p2)=(5000,400)

First we need slope (m)

m= (400-280)/(5000-1000)

= 120/4000=0.03

Now we will plug the value of m in the first equation

280=0.03(1000)+b

=> 280=30+b

=> b = 250

Now plug into p=mx+b using only m=0.03 and b=250

p=0.03x+250

When the unit price is $440, we can plug in 440 in for p;

440=0.03x+250

=> 0.03x=440-250

=> 0.03x=190

=> x = 6333 refrigerators

The lowest price at which  a refrigerator will be marketed, we can find this by plugging x = 0 in p=mx+b.

p=0.03(0)+250

=> p = $250

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