the mail-order music company charges $10 per cd plus a shipping and handing fee of $4.if bob paid $54,how many cd's did he buy.
1 answer:
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Answer:
y =
Step-by-step explanation:
Given that y varies inversely with x then the equation relating them is
y = ← k is the constant of variation
To find k use the condition y = when x =
, thus
=
= 2k ( divide both sides by 2 )
k =
y = ← equation of variation
When x = , then
y = =
=