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Under her cell phone plan, Grace pays a flat cost of $70 per month and $4 per
gigabyte. She wants to keep her bill at $74.40 per month. Write and solve an equation
which can be used to determine x, the number of gigabytes of data Grace can use
while staying within her budget

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Respuesta :

mhanifa

Answer:

  • 1.1 GB

Step-by-step explanation:

Let the number of gigabytes is x.

Required equation is:

  • 4x + 70 = 74.40
  • 4x = 74.40 - 70
  • 4x = 4.40
  • x = 4.40/4
  • x = 1.1
  • Flat cost=$70
  • Per GB cost=$4
  • Let total GB=x

AtQ

[tex]\\ \tt\longmapsto 70+4x=74.40[/tex]

[tex]\\ \tt\longmapsto 4x=4.40[/tex]

[tex]\\ \tt\longmapsto x=1.10GB[/tex]

  • 1GB and 100mB

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