markthomas456 markthomas456

03-07-2018
Mathematics

contestada

Tom buys a new phone service. It’s costs $20 to install, and then it costs 15 a month. Write an equation to show the cost of the phone (y) for any number of months (x).

Respuesta :

19020498 19020498

03-07-2018

the installation cost is fixed so treat it as a constant and treat the number of months as a variable and
y= 20+15x

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