Find the rate of change Marcia can pack 20 envelopes in 60 minutes and 80 envelopes in 4 hours.
(Covert hours to minutes.)

The rate of change is 3

60/30=3

4x60=240 minutes
240/80= 3

So rate of change is 3

She packs 20 envelopes per hour(60 minutes) i don’t know if this is correct, i’m sorry

This is what i found “answer: a rigid transformation preserves both the side lengths and the angle measures of a polygon. step-by-step explanation: rigid transformations are the transformations which does not affect the size and the shape of figure .” i hope this you for what your looking for. can you plz mark me brainliest?