The number of miles that John Smith can travel with his budget is 900 miles.
Amount left in the budget = $500
Since he will rent a car that costs $50 per day and $ 0.50per mile, the expression will be:
50 + 0.50m = 500
Collect like terms
0.5m = 500 - 50
0.5m = 450
Divide
m = 450/0.5
m = 900
Therefore, the number of miles that John Smith can travel with his budget is 900 miles.
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