Almost due

for 12 days, keisha keeps track of how much water she drinks per day. results are shown below.

1 1/2 quarts, 2 1/4 quarts, 2 quarts, 1 1/2 quarts, 1 3/4 quarts, 1 1/2 quarts, 1 1/4 quarts, 2 quarts, 2 1/4 quarts, 1 1/2 quarts, 2 quarts, and 1 1/2 quarts.

i believe average is 1 3/4 quarts per day.

on how many days did keisha drink at least the average amount of water? ?

on day 13, keisha drinks 1 quart of water. how does his affect the average amount of water she drinks? ? explain.