Answer: 
Step-by-step explanation:
Based on the information provided, you know that the dimensions of the water tank John buys are:

Then, in order to find the expression that represents the volume of the water tank, you need to multiply those dimensions.
You must remember the Product of powers property, which states that:

Therefore, applying this property, you get that the expression that represents the volume of the water tank is:

Answer:
17/24
Step-by-step explanation:
Answer:
28
Step-by-step explanation:
g+6-3=31
<em>Combine like terms</em>
g+3=31
<em>Subtract 3 from both sides</em>
g = 28