Sam kept track of the number of puppies available for adoption at the shelter. after 2 hours, there were 10 puppies available for adoption.

how long did it take until there were only 7 puppies available for adoption?

hope this .

r3t40

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.