Two points give you a line. A third point (often called a check-point) is used to confirm the accuracy of your first two points. If all three line up, you have confirmed you have the correct line.
        
             
        
        
        
ANSWER
After 7 years the car will worth, 7,759.5
EXPLANATION
The initial value of the car is 37000.
The rate of depreciation is 20%
In 7 years time, we can calculate the value of the car using the formula,

We substitute the values into the formula to obtain,



 to the nearest tenth
 
        
        
        
The correct answer is A.) { - 0.79 ; 1.08 }, because 
<span><span> <span>For </span><span>ax^2 + bx + c = 0</span><span>, the value of </span>x<span> is given by:</span></span>  <span>  ;
a = - 7 ; b = 2 ; c = 6 ; 
b^2 - 4ac = 4 + 168 = 172 ; </span></span>

≈ 13.11 ;<span><span>
x 1 = ( - 2 + 13.11 ) / (- 14) = 11.11 / ( - 14 ) </span></span>≈<span><span> -0.79 ;
x = 2 = ( - 2 - 13.11 ) / ( - 14 ) = (-15.11) / (- 14  ) </span></span>≈ 1.08 ;<span><span>
</span></span>
 
        
        
        
Answer:
5640
Step-by-step explanation: