R=4 because 20-4 = 16 and 4 times 4 = 16
        
             
        
        
        
The answer is : 
b = t - 5 / 4
        
                    
             
        
        
        
Reduce the numbers by dividing both by 2.4 to get the distance traveled per min which is 90.05 meters a min, so every min its altitude decreases by 90.05 meters
        
             
        
        
        
Answer:
98-40sqrt6
I used a calculator after trying to foil
 
        
             
        
        
        
Answer:
36 ft
Step-by-step explanation:
<u>Given </u><u>:</u><u> </u>
We need to convert it into feets. We know that , 
 1 yard = 3 feet
 1 yard = 3 feet 
 12 yards = 12 * 3 ft
 12 yards = 12 * 3 ft 
 12 yards = 36 ft .
 12 yards = 36 ft .
<u>Hence </u><u>the</u><u> </u><u>required</u><u> answer</u><u> is</u><u> </u><u>36</u><u> </u><u>feets </u><u>.</u>