Answer:
yes, 18 is a polynomial
Step-by-step explanation:
We have to show whether 18 is a polynomial or not
Polynomial is an expression involving variables and constants such that variables having non negative integer power.
Example 
etc,
Thus, yes 18 is a polynomial
as 18 can be written as 
where 
and 0 is non negative integer,
Thus, yes 18 is a polynomial as it can be written as having non negative integer power 0.
3a squared +4a-7 squared is a 2 btw
Distance traveled = 70 m
Number of rotations = 29
We know, Circumference * Number of rotations = Distance traveled
So, C = 70 / 29
C = 2.41 m
Now, we know, diameter = C / π
So, d = 2.41/3.14 = 0.768
In short, Your Answer would be: 0.8 m
Hope this helps!
The answer should be 23. Not sure if you have multiple choices, or have to show the work, but 23 is the answer.
The answer is 120 degrees
