Answer:
It equals 3
Step-by-step explanation:
To solve this it is basically like a normal problem you would just take out the X in it and divide 7 by 21 which leaves you with 3.
 
        
             
        
        
        
Answer: 0.1 I might be wrong tho
Step-by-step explanation:
 
        
                    
             
        
        
        
The answer is 6c=2.75 hope this helps
        
             
        
        
        
Answer: C) x = 2
2^{2x + 2} = 2^{3x}
Since both terms (above) have the same base, set the exponents to be equal:
2x + 2 = 3x (Rearrange to solve for x)
x = 2
∴ x = 2
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Let p represent cost of each drink. 
We have been given that the medium pizza costs two times as much as one drink, so the cost of medium pizza would be  .
.
We are also told that the large pizza costs three times as much as one drink,  so the cost of la pizza would be  .
.
We have been given that Mary wants to buy one large pizza, one medium pizza, and three drinks.
Since the cost of one drink is p, so cost of 3 three drinks would be  .
.
The total cost of one large pizza, one medium pizza, and three drinks would be 
Mary started with $30, so amount left after all of her purchases would be 30 minus total cost of all purchases.

Therefore, Mary will have  dollars left after making all of her purchases.
 dollars left after making all of her purchases.