Answer:
7
Step-by-step explanation:
I don't completely understand what you were asking, but if you were counting by 7's, 91 would be after 84 instead of just 90.
The power of the term with the coefficient of 6 answer C which = 1
Power is the exponent and coefficient is the number in front.
-12.405=-12 405/1000= 12 81/200