Final answer:
Anna Maria can afford a maximum of 8 meals on her budget.
Step-by-step explanation:
To determine how many meals Anna Maria can afford on her budget, we can set up an inequality equation. Let x represent the number of meals.
According to the problem, Anna Maria plans to spend $325 on travel and camping, and budgets $20 for each meal.
The inequality can be written as: 325 + 20x ≤ 500.
To solve for x, we can subtract 325 from both sides of the inequality: 20x ≤ 175.
Then divide both sides by 20: x ≤ 8.75.
Since we can't have a fraction of a meal, the maximum number of meals Anna Maria can afford on her budget is 8 meals.