Answer:
-36 + 27j
Step-by-step explanation:
 −9(4 − 3j)
Distribute
-9 * 4  -9 * (-3j)
-36 + 27j
 
        
                    
             
        
        
        
There are 20 students in the class.
 
        
             
        
        
        
Answer:
x ≤ 7/2
Step-by-step explanation:
Expand brackets:                   3x - 15 ≤ x - 8
Subtract x from both sides:   2x - 15 ≤ -8
Add 15 to both sides:                    2x ≤ 7
Divide both sides by 2:                   x ≤ 7/2
 
        
                    
             
        
        
        
29) Turns is the ratio of annual amount to average amount.
Cost turns = 57,982.85/15,545 ≈ 3.73
Sales turns = 130,935.60/35,388 ≈ 3.70
30) Consider January of the following year to be month 13.
7/16 to 13/14 is 6 months less 2 days. There are 31 days in July, August, October, and December, so 4 more days than 30 days per month. The total number of days is 6*30 -2 +4 = 182
31) I = Prt = $5380×0.118333×90/360 = $159.16