It should be for 5 hours if $30 is what they started with
 
        
             
        
        
        
Answer:
176 199 pounds
Step-by-step explanation:
To answer this it is first useful to find the proportionality constant.
F= kx
8080 pounds = k.88 in
k = 91.81 pound/inch
So what force is required to stretch the spring to 1919 inches?
F = kx
   = 91.81 pound/inch * 1919 inches
   = 176 199 pounds
It is worth noting that this force seems rather large and the spring might have long reached its elastic limit
 
        
             
        
        
        
A tree diagram can be drawn for a clearer understanding. The branches of the tails can be ignored since we are not concerned about that. To find the probability along the branches, we just have to multiply the probabilities of each branch, giving you an answer of 1/128
 
        
        
        
Answer:14
Step-by-step explanation:
He takes 2 a week so 2 times 7 is 14
 
        
             
        
        
        
2.25 is the elevation of the plane before its decent