The answer for the exercise shown above is the option B, which is: 
The explanation is shown below:
To list the powers of the polynomial given in the problem above in descending order, you must write the terms from the highest degree to the lowest degree. You have that the highest degree is

and the lowest degree is

(Because

. Therefore, you have that the correct option is the option B.
Answer:
a straight line at an angle of 90° to a given line, plane, or surface.
Step-by-step explanation:
you want me to do step by step or just tell you the answer?
Step-by-step explanation:
Answer:
1 to 100,000
Step-by-step explanation:
1 km is equivalent to 100,000 cm.