noah02111978
contestada

Paul wants to buy a phone. T-mobile is offering a $40 activation fee and $60 a month. AT&T is offering a $160 activation fee and $20 a month. At what month would Paul be paying the same amount?

Respuesta :

mhanifa

Answer:

  • At month 3

Step-by-step explanation:

Let's make equations for each case, with y being the total charge and x - the number of months.

T - mobile

  • y = 40 + 60x

AT&T

  • y = 160 + 20x

Make the equations equal an solve for x:

  • 40 + 60x = 160 + 20x
  • 60x - 20x = 160 - 40
  • 40x = 120
  • x = 3

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