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First, our equation is:
x 
Our first step is to simplify.
When you simplify you get 3 1/8.
This is another way you can get it: (Multiply across. )

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The second one is a perfect square trinomial
X^2+16x+64
Answer: 7 gallons decrease per minute
Step-by-step explanation:
56 gallons / 8 minutes = 7 gallons per minute
to make sure do it backwards: 7 gallons x 8 minutes = 56 gallons :)
Answer:
-30
Step-by-step explanation:
-4b^6 + -24b^6 = -30b^6