PLEASE HELP The ninth graders are hosting the next school dance.
They would like to make at least a $500 profit from
selling tickets. The ninth graders estimate that at most
300 students will attend the dance. They will earn $3 for
each ticket purchased in advance and $4 for each ticket
purchased at the door.
Write a system of inequalities to represent this situation.

the answer is pi i hope this helps

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'.