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anonymous

  • one year ago

please i need help on this one Barbara buys a box of pens for $4. For every additional box she buys, she gets a $1 discount. Which expression represents the total cost of the pens, c, as a function of the number of boxes, b? c = f(b) = 4b – 1 c = f(b) = 4b + 1 c = f(b) = 3b + 4 c = f(b) = 4b + 3 c = f(b) = 4 + 3(b – 1)

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  1. tkhunny
    • one year ago
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    1 box -- $4.00 2 boxes -- 2($4.00 - $1.00) 3 boxes -- 3($4.00 - $2.00) 4 boxes -- 4($4.00 - $3.00) Is that how it works?

  2. anonymous
    • one year ago
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    to be honest i don't know if thats how it works , i know nothing about math but thank you for your effort.

  3. tkhunny
    • one year ago
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    Well, it's kind of a problem, since... 5 boxes -- 5($4.00 - $4.00) = $0.00 If you buy five (5), they are FREE!!!! One should clarify the problem statement with the original author.

  4. anonymous
    • one year ago
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    Thank You , i already got the answer , but thanks alot , but you could help me with this one

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