50 pairs of whole numbers
The answer is 8
Here's why:

The exponents are subtracted one from another when divided.

We can look at the problem this way:

Since we have the power of -1 on the 3, we apply this rule:

Also this rule because we have the power of 1 on the 6:

Then we get this:

We apply the rule:

We get this:
It depends on how much gas is for 1 gallon
The answer is B. The shape is staying the exact same, it’s just moving.