An overseas phone call is charged at one rate (a fixed amount) for the first minute and at a
d...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 14.11.2019 05:31, mercedesamatap21hx0
An overseas phone call is charged at one rate (a fixed amount) for the first minute and at a
different rate for each additional minute. if a 7 minute phone call costs $10 and a 4 minute
phone call costs $6.40, find each rate.
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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