Final answer:
To represent the context where g represents the number of gigabytes of data Savannah can use while staying within her budget, we can use the equation: Budget = Flat cost + Cost per gigabyte * Number of gigabytes. By solving this equation, we can determine the number of gigabytes Savannah can use while staying within her budget.
Step-by-step explanation:
To represent the context where g represents the number of gigabytes of data Savannah can use while staying within her budget, we can use the equation:
Budget = Flat cost + Cost per gigabyte * Number of gigabytes
Substituting the given values, the equation becomes:
$51.90 = $37.50 + $3 * g
By solving this equation, we can determine the number of gigabytes Savannah can use while staying within her budget.