contestada

T-Mobile charges a flat fee of $20 plus $10 per Gig of data used per month. AT&T charges $60 for an unlimiteddata use. How many Gigs of data would you have to use so that the cost will be the same for both companies?

Respuesta :

For this case we can set uo an equation given by:

[tex]y=10x+20[/tex]

Where y represent the final cost. x the number of Gig used and for this case we can set up the following equation:

[tex]60=10x+20[/tex]

And solving for x we got:

[tex]x=\frac{60-20}{10}=\frac{40}{10}=4[/tex]

And the final answer for this case woudl be 4 Gig of data used