Answer:
x=2(3-y)/5
Step-by-step explanation:
5x=6-2y
x=6-2y/5
 
        
             
        
        
        
LCM the last common multiple. the greatest common factor is the biggest number that will go into the 2 numbers so it can be no bigger than the 2 numbers. the LCM is larger than at least one of them
        
             
        
        
        
For this we almost have the following equation:
 
 We must match the equation to zero: 

 From here, we clear the value of t.
 We have then: 

 We discard the negative root because we are looking for time: 
 
 Answer:
 it will take him to reach the ground about:
 
 seconds
 
        
             
        
        
        
Answer:
$120
Step-by-step explanation:
y = mx + b
The $100 sign up fee is a set amount, or the b value.
The $20 would be the m value since it the constant change, or the slope. 
Thus, the equation would be y=20x + 100
The membership fee for 1 month would be --->
 y= 20(1) +100
y= 20 + 100
y= $120