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systems by substitution: A phone company offers two monthly plans. Plan A costs
$17
plus an additional
$0.17
for each minute of calls. Plan B costs
$28
plus an additional
$0.13
for each minute of calls.

Respuesta :

klynn10
17+(.17*m)
28+(.13*m)
don't exactly understand the question but if your asking which is better Plan A is better unless you go over 100min

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