Under her cell phone plan, Ava pays a flat cost of $58 per month and $4 per gigabyte. She wants to keep her bill at $62.40 per month. How many gigabytes of data can she use while staying within her budget?

To determine how many gigabytes of data Ava can use while staying within her budget of $62.40, we can set up an equation.

### Step-by-step solution:

1. **Flat monthly cost:** Ava pays a flat cost of $58 per month.
2. **Cost per gigabyte (GB):** She pays $4 per gigabyte (GB) for data usage.
3. **Total budget:** She wants to keep her bill at $62.40 per month.

Let $ x $ represent the number of gigabytes of data Ava can use. The total cost equation is:

\[
58 + 4x = 62.40
\]

### Solving for $ x $:
1. Subtract 58 from both sides:

\[
4x = 62.40 - 58
\]

\[
4x = 4.40
\]

2. Divide both sides by 4:

\[
x = \frac{4.40}{4} = 1.1
\]

### Conclusion:
Ava can use **1.1 gigabytes** of data while staying within her budget of $62.40 per month.

Would you like more details on how to set up or solve this equation?

### Related questions:
1. What would her bill be if she used 3 GB of data?
2. How would her bill change if the cost per gigabyte increased to $5?
3. How much would she pay if she used 0.5 GB of data?
4. What if Ava wants to keep her bill under $60—how many gigabytes can she use?
5. How much more would Ava pay if her plan had an additional monthly fee of $10?

### Tip:
Always set up an equation based on known values and solve for the unknown to tackle budget-related problems like this.

Discover how to calculate the number of gigabytes Ava can use while keeping her cell phone bill at $62.40. This problem involves solving a linear equation using basic algebra. Suitable for Grades 6-8 students learning about linear equations and cost analysis.

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