rosamorris13 rosamorris13
  • 13-01-2019
  • Mathematics
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acme phone company charges $21 a month plus 0.05 a minute .belltone phone charges $15 a month plus 0.11 a minute. write and solve an equation to determine how many minutes a month you must use for cost of using either company to be equal

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meredith48034
meredith48034 meredith48034
  • 13-01-2019
Acme: .05x + $21. Belltone: .11x + $15

.05x + $21 = .11x + $15

(-.06x = -6)100

6x = 600

x = 100 minutes
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