I’ve attached my work below for #4
5) 8% is equivalent to 8 cents so each item was $1.08
Than you know he spent 16.20 so you divided 
1.08/16.20 which equals 15
So he got 15 items
6) the moon is 250,000 miles away which is about driving around earth 10 times which would take 6 months (not sure about this one)
Hope this helps!
Have a nice day :)
 
        
        
        
It is - 16 because adding two negatives give you a negative
        
             
        
        
        
Step-by-step explanation:
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Answer:
Step-by-step explanation:
Y=KX
P=KX
12=K40
12/40=K
.3=K
P=.3X
P=.3(240)
P=72
 
        
             
        
        
        
By definition we have that the average rate of change is given by:
 AVR = (f (x2) - f (x1)) / (x2 - x1)
 Substituting the values we have:
 AVR = (204 - (-6)) / (10 - 0)
 Rewriting we have:
 AVR = (204 + 6) / (10 - 0)
 AVR = 210/10
 AVR = 21
 Answer:
 the average rate of change for f (x) from x = 0 to x = 10 is:
 AVR = 21