Answer:
A) 480
B)24in
Step-by-step explanation:
Hope it helps. I
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A and B
Step-by-step explanation
-5^ -1 = 1/(-5) = -1/5
-1/y^(-4) = -(1/(1/y^4)) = -y^4
5^4 x 5^7 = 5^(4 + 7) = 5^11
Hope this helps!
:)