recycled cds incorporated, offers a choice of 5 used cds for $26, with each additional cd costing $4. write a cost function for purchasing 5 or more cds. what will the cost of buying 6 cds be ? let x represent the number of cds over 5.

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26-01-2018
Mathematics

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recycled cds incorporated, offers a choice of 5 used cds for $26, with each additional cd costing $4. write a cost function for purchasing 5 or more cds. what will the cost of buying 6 cds be ? let x represent the number of cds over 5.

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naseemmcclendon naseemmcclendon · Answer 1 · 2018-01-26T05:54:52+01:00

naseemmcclendon naseemmcclendon

26-01-2018

If $26 represents the cost of the 5 used CDs, than your formula would be "26+4x" ,x being the amount of extra CDs you purchase.

The number CDs minus 5 is our x value, because the first 5 are the used CDs bundled into the $26 group.

26+4(6-5)
26+4(1)
26+4
30

6 CDs would cost $30

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