I believe the answer would be A. 2x-y=6 :)
        
                    
             
        
        
        
To solve this problem, you will first want to convert 5 pounds into ounces. To do this, first determine how many ounces is in 1 pound.
There are 16 ounces in 1 pound, so to convert 5 pounds into ounces, you simply have to multiply 5 × 16. This will give you 80 ounces total.
Allie give 12 ounces away, so you must first subtract 12 ounces from your total (80 ounces). 80 - 12 gives us 68 ounces.
Allie then divides the trail mix up into 4 ounce portions. To figure out how many small bags she can make, you simply divide your new total (68 ounces) by 4. 
68 ÷ 4 = 17
Allie made 17 small bags. 
        
             
        
        
        
Answer:
98 
Step-by-step explanation:
 
        
             
        
        
        
Assuming the order does not matter, you want the number of combinations of 9 things taken 5 at a time.  The combinations can be shown as C(9,5), 9C5.
C(9, 5) = 
9/5(9-5) = 
9*8*7*6*5 / 5*4 
The 5 terms cancel. 
9*8*7*6 / 4*3*2 = 
9*7*2 = 
126
The above change is because 4*2 cancels the 8 in the numerator and 6/3 = 2
Therefore, the solution is 126. 
        
             
        
        
        
The answer is: 5,614 square inches.
 The explanation is shown below:
 1. The gift on the bottom is a rectangular prism. To calculate its surface area, you must apply the following formula:
  ![SA=2[(l)(w)+(l)(h)+(h)(w)]](https://tex.z-dn.net/?f=SA%3D2%5B%28l%29%28w%29%2B%28l%29%28h%29%2B%28h%29%28w%29%5D)
 Where  is the length (20 inches),
 is the length (20 inches),  is the width (42 inches) and
 is the width (42 inches) and  is the heigth (16 inches).
 is the heigth (16 inches).
 2. Substitute values:
 ![SA1=2[(20in)(42in)+(20in)(16in)+(16in)(42in)]=3,664in^{2](https://tex.z-dn.net/?f=SA1%3D2%5B%2820in%29%2842in%29%2B%2820in%29%2816in%29%2B%2816in%29%2842in%29%5D%3D3%2C664in%5E%7B2)
 3. The surface area of the other gifts can be calculated with the formula for calculate the surface area of a cube:
 
 Where  is the side.
 is the side.
 4. The surface area of the bigger cube is:
 
 5. The surface area of the smaller cube is:
 
 6. The total surface area (the combined surface area of the three gifts) is:
 