Which of these questions are unit rates? a.) crystal bought 2 pairs of shoes for $30.
b.) dallas ran 12 km in an hour.
c.) hugh made 17 tables in 4 days.
d.) jorge typed 222 words in 4 minutes.
e.) there were 56 berries in one pie.

c)as speed changes, wavelength and frequency change.

everything changes!

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

do you have a formula possibly