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Answer:
   d(32) = 28.80
   the price Marcus pays on an item with an original price of 32
Step-by-step explanation:
   d(32) = 32 -0.1(32)
   d(32) = 28.8
The problem statement tells you d(32) is the price Marcus pays when the original price is 32.
 
        
             
        
        
        
Answer:Alex earned $12
               John earned $36
Step-by-step explanation:
j=3a
a+3a=48
4a=48
a=48/4
a=12
j=36
 
        
             
        
        
        
Answer:
C 16
Step-by-step explanation:
Using ratios
3:12
12/3=4
4:x
4*4=16
x=16
4:16
hope this helps:)
 
        
             
        
        
        
Answer: √−1=i.
Step-by-step explanation: When we say that the square root of a negative number "doesn't exist", we mean that there is no real number solution. However, if we consider complex numbers, we then get a solution to √−1=i.
 
        
                    
             
        
        
        
For this case we have the following expression:
 x ^ 2 + 15x + 56
 We can factor this expression to find the possible dimensions of the rectangle.
 Factoring we have:
 (x + 7) (x + 8)
 Answer:
 the possible dimensions are:
 (x + 7) * (x + 8)