Answer:

Step-by-step explanation:
Given : An electronics store discovers that it can sell 5 televisions per day by pricing them at $150. When the televisions are on sale for $100 the store sells 10 of them every day.
To Find: Write a linear equation to compare the price of a television, p, to the number sold, x. Then write a quadratic equation to compare the revenue, m, from selling televisions to the number sold, x.
Solution:
Let p be the price and x be the no. of television sold
We are given that it can sell 5 televisions per day by pricing them at $150. When the televisions are on sale for $100 the store sells 10 of them every day. i.e(5,150) and (10,100)
Now to find the linear equation to compare the price of a television, p, to the number sold, x.
We will use two point slope form
Formula : 


Substitute the values in the formula






x is the no. of television sold
y is the price
Since p denotes the price
So, 
Thus a linear equation to compare the price of a television, p, to the number sold, x is 
Now 
Since price of x telivisons = 
So, 

m denotes revenue
So,
Thus a quadratic equation to compare the revenue, m, from selling televisions to the number sold, x. is 
Hence a linear equation to compare the price of a television, p, to the number sold, x is
and a quadratic equation to compare the revenue, m, from selling televisions to the number sold, x. is 