Respuesta :
Hi there! To find the unit rate or in this case, speed, do distance divided by time. In this case, 644.8 ft is the distance and 31 seconds is the amount of time. 644.8 /31 is 20.8. The unit rate is 20.8 ft per second.
Divide 644.8 by 31
20.8
So ThE AnSwEr Is 20.8
HoPe It HeLps PlEaSe MaRk Me ThE BRAINLYEST!!!!!!!!!!!!
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