The problem given above can be solved through the concept of permutation because of the importance of the arrangements. This may be solved through calculators directly by keying in,
                                       10P5
That is, the permutation of 10 taken 5. The answer to this permutation is 30,240. 
        
             
        
        
        
- 28 - 40i
note that i² = (√-1)² = - 1
expand product of factors using FOIL
= - 6 - 6i - 14i - 14i² - 20i + 36i²
= - 6 - 6i - 14i + 14 - 20i - 36
= - 28 - 40i
 
        
             
        
        
        
Answer:
I might be wrong double check but it's something like
Step-by-step explanation:
4x/3-40/3
(not to sure on that so don't be mad if it's wrong) 
 
        
             
        
        
        
Answer:
18
Step-by-step explanation:
= -4 x (-5) - 2 
= 20 - 2
= 18
 
        
                    
             
        
        
        
Answer:
$48.60
Step-by-step explanation:
First multiply the amount due by the tax
45 x .08 = 3.6
Final step add the tax to the amount due 
45 + 3.6 = 48.6