I think it is C average total cost is minimized 
        
             
        
        
        
Answer:
A. -$425.91
Explanation:
Given that
Start up cost = 2700
Cash inflow 1 = 811
Cash inflow 2 = 924
Cash inflow 3 = 638
Cash inflow 4 = 510
Rate = 11.2% or 0.112
Recall that 
NPV = E(CF/1 + i]^n) - initial investment or start up cost
Where
E = summation 
CF = Cash flow
i = discount rate
n = years
Thus 
NPV = -$2,700 + $811 / 1 + 0.112 + $924 / 1 + 0.112^2 + $638 / 1 + 0.112^3 + $510 / 1 + 0.112^4
NPV = -$425.91
Therefore, NPV = -$425.91
 
        
             
        
        
        
Answer: a) call his manager
Explanation: he should call his manager and take a day off to go see his doctor. 
 
        
             
        
        
        
Answer: According to the sticky-wage theory of aggregate supply, nominal wages at the initial equilibrium are <u>EQUAL TO</u> nominal wages at the short-run equilibrium resulting from the increase in the money supply, and <u>LESS THAN</u> nominal wages at the long-run equilibrium.
 
        
             
        
        
        
<span>The cost-benefit analysis Isaiah used is part of a systematic approach, a process where business decisions are analysed. In this case, the benefits acquired from using the commercial janitorial and maintenance are summed up, and the costs associated with taking their services are subtracted from it. The outcome of this analysis will help determine Isaiah if the commercial janitorial and maintenance services, inc. is financially beneficial to the company or not.</span>