my question is why do we need to do it  i know you asked nicely but i just wanna know
 
        
                    
             
        
        
        
Answer:
a)J = 450,000 +(20% * C)
b)C =250000+ (50%*J )
c)J = 450000 + {20%* [250000+(50%*J)}
Explanation:
a)J = 450,000 +(20% * C)
This represent the total cost of Janitorial Department due to the fact that 450000 is a direct cost of janitorial department plus 20% of total cost of Cafeteria department allocated to Janitorial department.
b)C =250,000+ (50%*J )
This represent the total cost of cafeteria Department due to the fact that 250,000 is a direct cost of cafeteria department plus 50% of total cost of Janitorial department allocated to cafeteria department.
c)
Substituting the value of C determined in part b in part a
J = 450,000 + {20%* [250,000+(50%*J)}
Therefore in place of C in equation 1 ,the value of c determined in equation 2 is thereby substituted .
 
 
        
             
        
        
        
At least 3 days per week with sufficient reps and sets.
        
             
        
        
        
When a payment is sent to the wrong person using p2p, the money cannot be gotten back since it is equivalent to giving money to a wrong account. However, the person can lay a complaint to the customer service to take action. 
<h3>What is P2P Payment?</h3>
P2P payment is a system of payment where money is sent to another member of the crypto community in exchange for a coin to be sent to the individual's wallet. It is equivalent to giving someone cash.
When a user mistakenly sends money to the wrong person, the money cannot be gotten back. But if the sender has the details of the wrong receiver, an appeal can be made for the money to be reversed. However, if this is not the case, then the money would have to be forfeited.  
Learn more about P2P Payment here:
brainly.com/question/25107350
 
        
             
        
        
        
There are different ways to promote vaccination. The Centers for Disease Control advertising are known to organize different campaign that helps to promotes the influenza (flu) vaccination.
It is often done through the use of promotional posters/flyers with the aim to advertise the various locations in the community that helps or offer seasonal flu vaccinations. 
They also display posters that talks about flu vaccination in schools, break rooms, cafeterias, high-traffic areas, etc. There is the use of articles in that are published on newsletters, internet, emails, etc.
<h3>Why spread 
awareness on vaccination?</h3>
The organization are known to use celebrities or employers to be vaccine ambassadors thereby promoting vaccines within and outside organization. The use of all these media above has influenced the rate at which people get vaccinated. The use of posters and other public figures to encourage vaccination has help reduce the spread of disease among the people.
Learn more about  advertising campaign from
brainly.com/question/15211775