Function Word Problem

queenbuc

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Joined
Oct 10, 2005
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4
I am a little stuck. Please help by leading me in the right direction.

The amount of paint in stock is represented by the function b(x)=4/5x, where b(x) is the amount of paint and x is the number of days until it runs out. How much will be left 4 days before it runs out?
 
What stands for "the number of days before it runs out"? Plug in "4" for that. Simplify.

Eliz.
 
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