Answer:
The requirement of the question is as below:
How much must Alan deposit on January 1? (Round your final answer to the nearest whole dollar amount.)  
What is the interest for the four years? (Round your final answer to the nearest whole dollar amount.)
Alan deposit on January 1 is $ 58,802.39  
Interest for four years is $21,197.61
Explanation:
The first is asking for today's worth of the investment,which is the amount to be invested,this can be computed using the present value as shown below:
PV=FV*(1+r)^-n
PV is the present value
FV is the worth of the investment in 4 years from now which is $80,000
r is the rate of return of 8%
n is the number of years of investment which is 4 years
PV=$80,000*(1+8%)^-4
PV=$80,0008(1+0.08)^-4
PV=$80,000*(1.08)^-4
PV =$ 58,802.39  
interest for four years=FV-PV
interest for four years=$80,000-$ 58,802.39  
                                     =$21,197.61
 
        
             
        
        
        
Answer:
The duties under the teaching contract cannot be delegated
Explanation:
The person wit whom the school has a binding agreement was Teresa and contract of services cannot be delegated unilaterally by Teresa to her friend Shirley without consulting the school authority.
The appropriate procedure would be for Teresa to discuss with the school her plans to let Teresa to cover up for her absence,however, if the school accepts the new arrangement , Teresa would need to be relieved of her duties as this would be a permanent substitution.
 
        
             
        
        
        
Answer:
No, a contract has not been form because the offer has been revoked
Explanation:
an offers can be terminated if there is rejection of offer by the offeree. an offer can be revoked before its has been accepted. Since the revocation is made known to Joe before the letter of acceptance reach joe. No contract has been form.
Acceptance or rejection of offer can be done orally or written. orally can be through phone communication. 
the phone call can also be a form of rejection of offer which has been declared by the offeree.
 
        
             
        
        
        
Answer:
supply chain is a system of organizations, people, activities, information,
Explanation:
hope that works