Answer:
i think b
Step-by-step explanation:
9=3^2 and 10^4=(10^2)2
If

is red, than the remaining

would be blue.

+

would give you

.
This answer is already to the nearest tenth. The 5 is in the tenth's place.
I believe the answer is 1/x-4
This is because the x-5 on the numerator and denominator cancel out