Recycled cds, incorporated, offers a choice of 5 used cds for $28, with each additional cd costing $5. write a cost function for purchasing 5 or more cds. what will the cost of buying 9 cds be? let x represent the number of cds over 5.

and

Step-by-step explanation:

Given: Recycled CDs, Incorporated, offers a choice of 5 used CDs for $28, with each additional CD costing $5

To Find: cost function for purchasing 5 or more CDs, the cost of buying 9 CDs, Let x represent the number of CDs over 5.

Solution:

Cost of buying 5 used CDs

Cost of additional CD

now,

number of CDs over

cost function for purchasing or more CDs =

Now,

Cost of buying CDs

one will buy additional CDs

Hence, cost function for purchasing 5 or more CD is  , and cost of buying CD is  

a

step-by-step explanation:

0 is its x and y coordinate