90^6=531441000000
80^-4= 1/80^4= 1/4960000
For this, use negative power rule x^-a= 1/x^a
<span>B) A key chain can hold 3 keys. If there are a total of 12 keys, how many key chains are there?</span>
I cant see the picture :(
Answer:
C
Step-by-step explanation:
It's the only one where an x-axis has more than one y-axis.
I hope this explanation helps.
