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Question 169171: Marlena is making her own bracelets. Each bracelets will have 10 beads. WRite a function rule to describe the number of beads she will use. Find a reasonable domain and range for the fuction if Marlena makes up to 7 bracelets.
Answer by mangopeeler07(462)   (Show Source):
You can put this solution on YOUR website! "Marlena is making her own bracelets. Each bracelet will have 10 beads. Write a function rule to describe the number of beads she will use. Find a reasonable domain and range for the fuction if Marlena makes up to 7 bracelets."
We'll have "x" be the number of bracelets and "y" be the number of beads.
"Marlena makes up to 7 bracelets": because of this statement, we know that x, the number of bracelets, may not go over 7.
Logically, Marlena cannot make a negative number of bracelets, so we also know that x has to be more than (or equal to) 0.
So our logical domain would be:
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We know that each bracelet has ten beads, so the amount of beads used would be ten times the amount of bracelets, or  ---in f(x) form, this is the function---->  .
To get the logical range, all we have to do is use the logical domain, which we already have, and use the same inequality signs.
Plug in 7 and 0, our logical domain, for x to get the logical range, y.
So the logical range would be
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Domain:
Range:
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