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andreev551 [17]
3 years ago
12

A phone company offers two monthly plans. Plan A costs 14 plus an additional 0.09 for each minute of calls. Plan B costs 18 plus

an additional 0.07 for each minute of calls. For what amount of calling do the two plans cost the same? What is the cost when the two plans cost the same?
Mathematics
1 answer:
Sliva [168]3 years ago
8 0

Answer:

200 minutes

Step-by-step explanation:

14 + 0.09 x = 18 + 0.07 x

0.09 x - 0.07 x = 18 - 14

0.02 x = 4

x = 400/2 = 200

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bija089 [108]

Answer:

k = 48

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Step-by-step explanation:

The general equation for inverse variation is

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We are told that y = 24 when x = 2, so we plug in those two values in the general equation to find the value of k.

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Now that we know k = 48, the equation for our case is

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Now we plug in x = 6 and find y.

y = 48/x

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UkoKoshka [18]
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Answer:

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