Define the variables:

Let (x) represent the additional amount Stefani needs to earn.
Write the inequality:
Stefani’s total earnings (including babysitting) must be at least $250: [48 + x \geq 250]
Solve for (x):
Subtract 48 from both sides of the inequality: [x \geq 250 - 48] [x \geq 202]
Therefore, Stefani needs to earn at least $202 more to reach her goal of $250 for the softball tournament.

Variable Definition:

- x: additional amount Stefani needs to earn

Inequality:
48 + x ≥ 250

Solving for x:
x ≥ 250 - 48
x ≥ 202

Stefani needs to earn at least $202 more to reach her goal of $250 for the softball tournament.