Students in North America observe this wind vane at these times during the day in order to predict the weather Which prediction can the students make based on their observations?

O A will be warmer the next day.
OB. There is likely to be a tomado soon.
OC. There is a cold front coming from the North.
OD. There is a warm front coming from the South.

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.

Me. i can't figure out this question. give an explanation too. .