I don't understand can someone please help me the drop down box answers for the first one are: 2(b+a), 2(b^2+a^2), 2b^2+4ab+2b^2
the drop down box answers for the second one are: (b+a)(b-a), (b+a)^2(b-a)
(b+a)^2(b^2-a^2)

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'.

if im not mistaking its

step-by-step explanation:  

where is the option given