Answer:
The height of the tree in feet would be the larger number
 
        
             
        
        
        
Answer:
 4. 
Step-by-step explanation:
Area = 1/2 * base + height
= 1/2 * 2 * 4
= 4 unit^2.
 
        
             
        
        
        
Answer:
C. -9 
Step-by-step explanation:
The pattern is clearly subtracting 4 each time (or adding -4). 
-5 - 4 = -9
 
        
                    
             
        
        
        
Answer:
$38.31
Step-by-step explanation:
Given:
 Pure silver that cost $33.48 per ounce used to form $24.35 alloy/ounce.
Question asked:
How many ounces of pure silver were used to make an alloy of silver costing $27.87 per ounce?
Solution:
At cost $24.35/ounce, pure silver is mixed = $33.48
At cost $1/ounce, pure silver is mixed = 
At cost $27.87/ounce, pure silver is mixed = 

Thus, $38.31 ounces of pure silver were used to make an alloy of silver costing $27.87 per ounce.