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A phone company offers two monthly plans. Plan A costs $22 plus and
additional $0.09 for each minute of calls. Plan B costs $8 plus an
additional $0.14 for each minute of calls. For what amount of calling do
the two plans cost the same?

Respuesta :

Answer:

Step-by-step explanation:

Plan A = 30 +0.15x

Plan B = 16 +0.20x

30+0.15x = 16+0.20x

subtract 16 from each side

14 +0.15x = 0.20x

subtract 0.15x from each side

14=0.05x

x = 14/0.05 = 280 minutes

280*0.15 = 42 +30 = $72

280 * 0.20 = 56 +16 = 72

280 minutes and cost $72 each

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