Answer:
The monthly cost be if you typically talk for 550 minutes per month would be 28.
Step-by-step explanation:
The monthly cost is function of the time t, in minutes, is given by the following equation.
[tex]C(t) = C_{0} + at[/tex]
In which [tex]C_{0}[/tex] is the fixed cost and a is the cost of the minute.
pt&t has a special plan offer this month. there is a 6.00 per month charge each month and calls everywhere in the united states are 0.04 per minute.
This means that [tex]C_{0} = 6, a = 0.04[/tex]. So
[tex]C(t) = C_{0} + at[/tex]
[tex]C(t) = 6 + 0.04t[/tex]
what would the monthly cost be if you typically talk for 550 minutes per month
This is C(550).
[tex]C(550) = 6 + 0.04*550 = 28[/tex]
The monthly cost be if you typically talk for 550 minutes per month would be 28.
