Answer: according to spark notes: There can be 0, 1, or 2 solutions to a quadratic equation, depending on whether the expression inside the square root sign, (b2 - 4ac), is positive, negative, or zero. This expression has a special name: the discriminant.
In this case it is 0, not 2, which was my first and wrong answer
 
        
                    
             
        
        
        
The x axis is labeled as Number of days.
<h3 /><h3>What is graph?</h3>
Graph is a mathematical representation of a network and it describes the relationship between lines and points. 
let x be the  number of days and y be money.
So, the equation is
y = -7x + 150.
Hence, the x axis is labeled as Number of days.
Learn more about this concept here:
brainly.com/question/1509203
#SPJ1
 
        
             
        
        
        
Answer:
13 
Step-by-step explanation:
8 - (-5) = 13
Since x is the same in both points we only have to count the y
 
        
             
        
        
        
Y=1/2x is the equation of the line.
        
             
        
        
        
160/55.
Simplified version is 32/11