64x^6 - 192x^5 + 240x^4 - 160x^3 + 60x^2 - 12x + 1
Hi there.
We know that the cost of 2 bags is $4, which can be modeled as 2n.
All we need to do is replace the variable with the number of bags.

The cost of 1 bag is $2.
Hope this was correct, lol.
Answer:
Options (1) and (2)
Step-by-step explanation:
Properties of a polynomial,
1). A polynomial having division by a variable can't be defined as a polynomial.
Example:
(y² +
)
2). A polynomial can't have a negative exponent.
Example : 
3). Polynomials don't have the radicals.
Example : y² + x√3
4). A polynomial can't have a fraction exponent.
Example :
By these properties, Options (3) and (4) are not the polynomials.
Options (1) and (2) are the correct options.
Should be run :) is this for slope?
If each spoke reaches from the center of the wheel to its rim, then that means that each spoke is as long as the radius.
To calculate radius:
C=2πr
π=3.14
C=42 inches
42=2(3.14)r
2*3.14=6.28
42=6.28r
Divide 42 by 6.28
42/6.28=6.68
length of each spoke is 6.68 inches.