E(1,-4)  F(1,-6)  G(-3,-5)  H(-3,-3)
 
        
             
        
        
        
Answer:
1. $22.58
2. $28.70
3. $27.58
4. 15%
Step-by-step explanation:
#3: 22 + 1.98 = 23.98 + 3.60 = 27.58
 
        
             
        
        
        
Answer: 18
Step-by-step explanation:
Square root of 81 is 9 because 9*9=81 then 9*2=18
 
        
             
        
        
        
So we know that it must be between 9.5 9.7.. So it has to be 9.56763865854637984... (rounded 9.57) it is irrational because it has no pattern.