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The inequality is 4x + 53 ≥ 69.
To solve the inequality, we start by subtracting 53 from both sides:
4x + 53 - 53 ≥ 69 - 53
This simplifies to:
4x ≥ 16
Next, we divide both sides of the inequality by 4:
4x/4 ≥ 16/4
This simplifies to:
x ≥ 4
Therefore, she needs to babysit at least 4 kids.