A phone company charges $.25 for the first minute of a long distance call and $.07 for each addition minute. write an equation t

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A phone company charges $.25 for the first minute of a long distance call and $.07 for each addition minute. write an equation t

hat gives the cost C of a long distance call as a function of the length t (in minutes) of the call. find the duration of a long distance cap that costs $2

Mathematics

1 answer:

Mamont248 [21] · Answer 1 · 2024-01-14T02:18:07+03:00

The cost C of a long distance call as a function of the length t is C(t) = 0.25 + 0.07t and the number of minutes is 25 minutes

<h3>What are linear equations?</h3>

Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient

<h3>How to determine the solution to the system?</h3>

A system of linear equations is a collection of at least two linear equations.

In this case, the given parameters are:

Charge for first minute = $.25

Rate for additional minute = $.07 per minute

Let the number of minutes be t and the total cost be C(t)

So, we have:

C(t) = Charge for first minute + Rate for additional minute * x

This gives

C(t) = 0.25 + 0.07t

When the total cost is $2, the equation becomes

0.25 + 0.07t = 2