Mrs. Smith is planning a class party for 18 students. She will be serving apple juice. If she serves 250ml per student, how many liters of juice will she need to buy

So the first thing you have to do is multiply 250ml by 18. Them once you get that number you can simply look up on the internet the conversion from whatever that number of ml was to liters.

The solution to the system of equations (-2,2)

Physical stimulation can not be used as you carnt ask 1/2 a person a it would be painful