arielsybert1 arielsybert1

26-11-2020
Mathematics

contestada

in 1989 a postage stamp cost $.25. In 1999 a postage stamp cost $.33. Find the average rate of
change in postage in cents per year.
HELP ASAP

Respuesta :

26mac9079 26mac9079

26-11-2020

Answer:

0.33-0.25= 0.08

then 1999-1989= 10

lastly 0.008

Step-by-step explanation: so the average rate of

change in postage in cents per year. is 0.8 of a cent. or 0.008 of a dollar.

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ONIICHAN86 ONIICHAN86

26-11-2020

I’m pretty sure it is 80 cents, because it changed by 8 cents in 10 years so you’re supposed to divide 8 by 10 and get .8 which is equivalent to 80 cents

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