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11 September, 19:53

Joseph is traveling on a road trip. The distance, d, he travels before stopping for lunch varies directly with the speed, v, he travels. He can travel 120 miles at a speed of 60 mph.

Write the equation that relates d and v.

How far would he travel before stopping for lunch at a rate of 65 mph?

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  1. 11 September, 22:26
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    d = kv

    Substitute the 60 and 120 in.

    120 = k * 60

    k = 2

    So, d = 2v

    If v is 65, what is d?

    2 * 65 = 130 miles
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