I’m pretty sure it’s the first option
1. b
2. b
That is all you need right?
Answer:

Step-by-step explanation:
You can break it down to:

5 * 2 * 
10 *
= 10/6 Reduce to 5/3
So the problem can be simplified to:

Answer:
C and D
Step-by-step explanation:
I'm guessing the 3 in A and B are exponents, only equations with an highest exponent of 1 is linear