16-~7 make sure to leave the power 5 out
        
                    
             
        
        
        
Drop the egg from half way up the building. This divides the search space in half. If it breaks, start on the bottom floor and work your way up the top :) Hope it works
        
             
        
        
        
Answer:
x = 5
y = 5
Step-by-step explanation:
In this question you need to solve one equation in order to plug the value into the second one and solve it as well. Lets start with the top one...
2x - x = 5
1x = 5
x = 5
Now we plug that value of x into the second equation
4x - 2y = 10
4(5) - 2y = 10
20 - 2y = 10
-2y = -10
y = 5
Finally, we can see that both x and y have a value of 5.
 
        
             
        
        
        
This function follows only one condition 
x = -2(3) 
x = -6
f(-6) = -4(-6) + 7
f(-6) = 31