Answer:
B
Step-by-step explanation:
Recall that 
So now

(Sqr.3)/2 not a or b or c
Answer:
omg that one is hard but it is 18j-6m
Answer:
Exact form: 3√5/5
Decimal form: 1.34164078...
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
8x^2+x+3 follows the rules of being a polynomial due to the three terms being added to each other, and that they are in descending order.