<PRE><B>Question 25294</B>
first find:
A fee + (cost/CD) x # CDs
B fee + (cost/CD) x # CDs
30 + 8 x #CDs
45 + 7 x #CDs
when does A become more expensive?
first find when they are equally expensive
30 + 8n = 45 + 7n
n = 15
when n = 15, A club costs $150
B club costs $150
suppose n = 16
A club costs 30 + 8 x 16 = $158
B club costs 45 + 7 x 16 = $157
16  CDs is the answer
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