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Under her cell phone plan, Julieta pays a flat cost of $61.50 per month and $5 per gigabyte. She wants to keep her bill at $78 per month. Write and solve an equation which can be used to determine g, the number of gigabytes of data Julieta can use while staying within her budget.

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MrRoyal

The number of gigabytes to keep her bill at $78 per month is 3.3

What are linear equations?

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

How to determine the solution to the system?

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

In this case, the given parameters are:

Flat cost = $61.50 per month

Rate = $5 per gigabyte.

Let the number of gigabytes be x and the budget be y

So, we have:

y = flat cost + rate * x

This gives

y = 61.50 + 5x

She wants to keep her bill at $78 per month.

This gives

61.50 + 5x = 78

Subtract 61.50 from both sides

5x = 16.5

Divide both sides by 5

x = 3.3

Hence, the number of gigabytes to use is 3.3

Read more about linear equations at:

https://brainly.com/question/14323743

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