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
Answer:
18
Step-by-step explanation:
Median: 3
mode: 3
range: 9
interquartile range: 2
the outliers are 9 and 5. there is a cluster between 2 and 3.