Which phrase describes a unit rate? A. $$ \frac{3}{2} $$ feet for each second B. 2 feet per 3 seconds C. 3 feet for every 2 seconds D. 1 foot for each $$ \frac{3}{2} $$ seconds

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1. A unit rate means that the denominator is 1; that is, it tells us the amount of one quantity per one unit of another quantity.

2. In option A, the phrase is $$ \frac{3}{2} $$ feet for each second. This is equivalent to $$ \frac{3}{2} $$ feet per 1 second, which is already expressed as a unit rate because the time is 1 second.

3. In the other options, the denominator is not 1:
   - Option B: 2 feet per 3 seconds → Seconds is 3.
   - Option C: 3 feet for every 2 seconds → Seconds is 2.
   - Option D: 1 foot for each $$ \frac{3}{2} $$ seconds → Seconds is $$ \frac{3}{2} $$.

4. Therefore, the phrase that describes a unit rate is option A.
Option A, $$ \frac{3}{2} $$ feet for each second, describes a unit rate.

Which phrase describes a unit rate? A. \( \frac{3}{2} \) feet for each second B. 2 feet per 3 seconds C. 3 feet for every 2 seconds D. 1 foot for each \( \frac{3}{2} \) seconds

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