The total charges of both companies is the same at 24 months.
The equation of the scenarios
We have:
Company one:
- Set up fee - $20
- Service plan-$25/month
- Phone payment-$40/month
This means that:
y = 20 + 25x + 40x
y = 20 + 65x
Company two:
- Set up fee-$30
- New phone-$700
- Service plan-$35/month
This means that:
y = 30 + 700 + 35x
y = 730 + 35x
The graph of both companies
See attachment
The point of intersection
On the attached graph, the point of intersection is at
(x, y) = (24, 1558)
This means that the total charges of both companies is the same at 24 months.
The better deal
On the long run, phone company two has a better deal.
On the short run, phone company one has a better deal.
Because the function have lesser values after the point of intersection.
Read more about linear function at:
https://brainly.com/question/4025726
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