To solve for n start off by adding bn to both sides.
an - 4a + 3 + -bn = bn + -bn
an - bn - 4a + 3 = 0
Now, add -3 to both sides.
an - bn - 4a + 3 + -3 = 0 + -3
an - bn - 4a = -3
Add 4a to both sides.
an - bn - 4a + 4a = -3 + 4a
an - bn = 4a - 3
Factor out variable n.
n(a-b) = 4a - 3
Divide both sides by a - b.
a(a-b) / a - b = 4a - 3 / a - b
Your final answer is:
n = 4a - 3 / a - b

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3 years ago

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t takes a total of 6 hours to fill up an inground backyard pool using a standard hose. A function can represent this situation t

Alina [70]

The domain is the set of inputs over which our function W(T) gives a valid result.

$0 \le T \le 6 \textrm{ hours}$

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3 years ago