Answer:

Step-by-step explanation:
Given


Required

First, we calculate the z score






So:


From z probability, we have:

 
        
             
        
        
        
You will need to raise the unit selling price... do you need know by how how much? well it it will have to be a 25% increase for the unit selling price to maintain the groos margin percentage
        
             
        
        
        
2=6
3=9
9=27
You just times the number in box X three times
        
             
        
        
        
Answer:
1: 5
2: 5
3: 1.5
Step-by-step explanation:
 
        
             
        
        
        
Dy/dx = (dy/dt) / (dx/dt)
dy/dt = 2cos(2t)
dx/dt = -2sin(2t)
dy/dx = 2cos(2t)/-2sin(2t) = -cot(2t)
d^y/dx^2 = d(-1/tan(2t))/dx = (tan(2t) * 0 - (-1)*2sec^2(2t))/tan^2(2t) = 2sec^2(2t)/tan^2(2t) = 2csc^2 (2t)