Answer:

Then just plug in the values depending on the bridge you chose I'm pretty sure
also can I get brainliest?
3 to the negative second power is written like this:

.
When simplifying an expression with a negative exponent, you take a positive version of the exponent, in this case that would be 2, and apply that to the base.
After doing that, we have 9.
The next step is to put one over that number.
In this case, now after doing that the answer is

.
Hope this helps!
I think it's like 16 or 10. this is a weird word problem