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adoni [48]
3 years ago
10

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.
Mathematics
1 answer:
Luda [366]3 years ago
3 0
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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