Find domain and range of both these problems. The cost of entering an amusement park is $25

Find domain and range of both these problems.

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The cost of entering an amusement park is $25 and the rides cost $4 each. The cost of entering the park and riding x rides can be described by the equation y = 4x + 25. Beatrice had $4 saved on Monday. Each day, Beatrice saved $1 more. The amount of money saved, y, can be described by the equation y = x + 4, where x is the number of days she has saved after Monday. The cost of entering an amusement park is $25 and the rides cost $4 each. The cost of entering the park and riding x rides can be described by the equation y = 4x + 25. Beatrice had $4 saved on Monday. Each day, Beatrice saved $1 more. The amount of money saved, y, can be described by the equation y = x + 4, where x is the number of days she has saved after Monday.