D(t) = -4t^3 + 40t^2 + 500t = 4088
4t^3 - 40t^2 - 500t + 4088 = 0
t = 7
Therefore, the plane has flown 4088 km 7 hours after it took off.
        
             
        
        
        
50% because you first subtract the original price from the new price so 126-84 equals 42 then you divide that by the original price 84 which will give you .5 which turns to 50%
        
             
        
        
        
Answer:
No, because AB is 2/5 the length MN but CD is 1/3 the length QP.  
Step-by-step explanation:
Comparing the corresponding sides, the length of AB is 4.  The length of MN is 10.  This makes their ratio 4/10 = 2/5.
The length of CD is 2.  The length of QP is 6.  this makes their ratio 2/6 = 1/3.
The ratios of the sides are not the same, so the figure is not proportional and is therefore not a dilation.
 
        
                    
             
        
        
        
                                      Doesn't play sport
                           Plays sport      |
                                          |         |
                                          V       V
Takes language            |  21  |  17  |
                                       -----------------
Doesn't take language |  12  |  4 |
 
        
             
        
        
        
The Correct Answer is : 4x - 4 * 2
Hope This Helps :)
If it does please give brainliest answer xD