Answer:
Answer: 
 
The second option: 4 1/2 x = 22 1/2 
 
The whole volume is 22 1/2 so that is on one side of the equals sign but it must be by itself. Then the formula for volume is length x width x height. 
 
so 22 1/2 = l x w x h 
 
Two of these numbers are given. You multiply 3 x 1 1/2 to get 4 1/2 times the unknown value of x
Explanation: