arishasharif99 arishasharif99
  • 17-10-2018
  • Mathematics
contestada

An international calling plan charges a rate per minute plus a flat fee. A 10-minute call to France costs $3.19. A 15-minute call to France costs $4.29. Write and solve a linear equation to find the cost of a 12-minute call to France

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marthagsantamaeia marthagsantamaeia
  • 17-10-2018

y = 0.22(12) + .99 = 3.63

A 12 minute call will cost $3.63

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