The constant of proportionality is thus 45; the unit rate is 45 miles per hour.
The relationship between the time t (in hours) and the distance d (in miles) is thus
The sum of a number and 7 divided by -3 is 2
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The constant of proportionality is thus 45; the unit rate is 45 miles per hour.
The relationship between the time t (in hours) and the distance d (in miles) is thus