Peter is at a lumber yard. he gets 2 free boxes of nails for every 10 boards he buys. write an expression for the number of boxes of nails peter will get if he buys n boards. if each box has 100 nails, explain how to write an expression to find how many nails peter will have if he purchases 90 boards.

A. The number of 10-boards Peter bought is equal to n divided by 10. Then, each of the 10-boxes will get two boxes of nails. The number of boxes of nails that Peter will have after buying n boards will be,

    N = (2)(n/10)

Simplifying,

   N = n/5

b. If the number of boards are 90 then,

     N2 = (90/10)(2)(100 nails/box)
     N2 = 1800

1800

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Ibelieve the answer is b