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The correct equation is:
20x = 60 + 5x
Solving for x:
20x - 5x = 60
15x = 60
x = 60 / 15
x = 4
Therefore, it would take 4 visits for the cost of the two options to be equal.
The correct answer is:
A. 20x = 60 + 5x ; x = 4