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Jacob and Carla are comparing the international calling plans on their cell phones. On his plan, Jacob pays $4 just to place a call and $1 for each minute. When Carla makes an international call, she pays $2 to place the call and $2 for each minute. A call of a certain duration would cost exactly the same under both plans. What is the cost?
Write a system of equations, graph them, and type the solution.
please graph response
If you don't know don't answer

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phamkienminh1234

Answer:

3 minutes is the cost of the call that is same for both plans

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

Let's assume the call duration in minutes is represented by x.

For David, the cost of the call can be represented by the equation: C(d) = 4 + x

For Alec, the cost of the call can be represented by the equation: C(a) = 1 + 2x

Since the cost of the call is the same for both plans, we can set the two equations equal to each other and solve for x:

4 + x = 1 + 2x

Solve for x.

3 = x

Hence, the call duration that costs the same on both plans is 3 minutes.

Step-by-step explanation:

Ver imagen phamkienminh1234
DSunky

Jacob's plan costs $4 to start and $1 per minute, while Carla's plan costs $2 to start and $2 per minute. They want to find a call duration where both plans cost the same. After some math, they realize that a 2-minute call costs $6 under both plans. Therefore, the cost of the call for that duration is $6.

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