Examples:
1.) Having a stain on your rug there's only so much you can get out before your damaging your rug with cleaner
2.) Babysitting and having the child miss there mom, there's only so much you can do to try to calm him/her down 
3.) Watering plants, if you haven't watered plant in a long time so you give them extra water, if you keep giving the plant extra water it will eventually drown and die.
        
             
        
        
        
Answer:
There is CEO duality
Explanation:
What is a CEO duality
CEO duality refers to the situation when the CEO also holds the position of the chairman of the board.
The board of directors is basically designed to keep an eye on managers such as the CEO on the behalf of the shareholders. They design compensation contracts and hire and fire CEOs. The benefit of having a dual CEO in the firm is because he or she  could work closely with the board to create value.
Christina in this sense is tryinb to bring more value to the firm and in ghe capacity of just the CEO her hands are tied. She probably wants more authority or power to do much more.
 
        
             
        
        
        
Answer:
The plant would have to work 8.33 hours
Explanation:
Initial productivity:
100 parts were produced in 1 hour
Percentage increase in productivity = 20% 
New productivity:
100 + (100 × 0.2) = 100 + 20 = 120
120 parts would be produced in 1 hour
Number of hours the plant would have to work to produce 1000 parts = 1000/120 = 8.33 hours
 
        
             
        
        
        
Answer:
It often proves difficult to actually realize the change that you have come up with. Especially when it comes to cultural or behavioral change. We want to show that change is not so much something that you have to get others to join. You have to make your change part of it