Step-by-step explanation:
commision = 7% of $9000 
commision = 7/100 * $9000 
commision = $630 
 
        
             
        
        
        
Q17:
one week = $560
52 weeks = 560 x 52 = $29120
Q18: 
one year = $28500
52 weeks = 28500
1 week = 28500 ÷ 52 = $548
Q19:
5% of $300000 = 0.05 x 300000 = $15000
$15000 + $12000 = $27000
        
             
        
        
        
Answer:
the awnser is 45
Step-by-step explanation:
 
        
                    
             
        
        
        
A suitable calculator* can do this easily.
61°38'45" = (61 +(38 +45/60)/60)° ≈ 61.65°
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I like the RealCalc app for Android, but many graphing calculators also will do this conversion. Of course, you can simply evaluate the expression as above.
        
                    
             
        
        
        
Answer:
6, 11, 16, 21
Step-by-step explanation:
To obtain the first 4 terms add the common difference 5 to the previous term, that is
a₁ = 6
a₂ = a₁ + 5 = 6 + 5 = 11
a₃ = a₂ + 5 = 11 + 5 = 16
a₄ = a₃ + 5 = 16 + 5 = 21