Here you go, hope it helps:)
 
        
        
        
Its kind of like how it is on a car to tell how fast your going i hoped this helped!
 
        
        
        
The value of price (p) at a point of equilibrium is 13.4. Then the correct option is C.
<h3>What is the linear system?</h3>
A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.
The equation of the demand (D) and supply (S) is given below.

Where p is price.
At equilibrium, we have
D = S
Then 

More about the linear system link is given below.
brainly.com/question/20379472