If y varies jointly as x and s and and y=24 when x=3 and z=8.

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'.

1/4 because there is 4 grades.

sorry i need the points

step-by-step explanation:

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answer4 to the second power is 16

and 4 to the third power is 64,