We need to write an equation to show how distance and time t are related to travel at each speed.
Let the distance = d
Time = t
Speed = s
Speed is the distance over time:
So,
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Solve the equation for d
so, the general relation will be:
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When s = 50 miles per hour, the equation will be:

when s = 55 miles per hour, the equation will be:
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when s = 60 miles per hour​, the equation will be:
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