Answer:2
Step-by-step explanation: 5  - 3 = 2
 
        
             
        
        
        
Answer:
54
Step-by-step explanation:
to evaluate substitute b = 18 into 3b
3b = 3 × 18 = 54
 
        
                    
             
        
        
        
Rational number since a rational number is Any integer 
 
        
             
        
        
        
Answer:
$123.25
Step-by-step explanation:
A selling price reflecting a 45% markup can be found by multiplying the wholesale price ($85) by (1 + 0.45), or  1.45:
1.45($85) = $123.25