I’ll mark the brainliest

Answers:

1: Yes, a polynomial (I'm going from left to right top to bottom)

2:  Yes, a polynomial

3. Yes, a polynomial

4. Yes, a polynomial

5. No, not a polynomial

6. No, not a polynomial

Sorry this took so long!

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0