Under her cell phone plan, Ella pays a flat cost of $37.50 per month and $5 per gigabyte. She wants to keep her bill at $59 per month. How many gigabytes of data can she use while staying within her budget?
Let x be the number of gigabytes Ella can use while staying within her budget.
The total cost can be represented by the equation:
Total Cost = $37.50 + $5x
Given that Ella wants to keep her bill at $59 per month, we have:
$59 = $37.50 + $5x
$5x = $59 - $37.50
$5x = $21.50
x = $21.50 / $5
x = 4.3
Ella can use up to 4.3 gigabytes of data while staying within her budget.