A homeowner's electric bill for the month was $155.80 for 1,900 kilowatt-hours of energy used. If no electricity is used there is no charge for service. Which
equation represents the cost in dollars of the electricity, y, and the number of
kilowatt-hours of energy used, x?
A. y = 12.2x
B. y = 0.082x
C. y = 0.12%
D. y = 8.2x

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'.